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httpserver.py
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httpserver.py
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import BaseHTTPServer
import SocketServer
import cgi
import gzip
import logging
import mimetypes
import os
import shutil
import socket
import time
from cStringIO import StringIO
from email.utils import formatdate
from urllib import unquote_plus, quote
from xml.sax.saxutils import escape
from Cheetah.Template import Template
import config
from plugin import GetPlugin, EncodeUnicode
SCRIPTDIR = os.path.dirname(__file__)
SERVER_INFO = """<?xml version="1.0" encoding="utf-8"?>
<TiVoServer>
<Version>1.6</Version>
<InternalName>pyTivo</InternalName>
<InternalVersion>1.0</InternalVersion>
<Organization>pyTivo Developers</Organization>
<Comment>http://pytivo.sf.net/</Comment>
</TiVoServer>"""
VIDEO_FORMATS = """<?xml version="1.0" encoding="utf-8"?>
<TiVoFormats>
<Format><ContentType>video/x-tivo-mpeg</ContentType><Description/></Format>
</TiVoFormats>"""
VIDEO_FORMATS_TS = """<?xml version="1.0" encoding="utf-8"?>
<TiVoFormats>
<Format><ContentType>video/x-tivo-mpeg</ContentType><Description/></Format>
<Format><ContentType>video/x-tivo-mpeg-ts</ContentType><Description/></Format>
</TiVoFormats>"""
BASE_HTML = """<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html> <head><title>pyTivo</title>
<link rel="stylesheet" type="text/css" href="/main.css">
</head> <body> %s </body> </html>"""
RELOAD = '<p>The <a href="%s">page</a> will reload in %d seconds.</p>'
UNSUP = '<h3>Unsupported Command</h3> <p>Query:</p> <ul>%s</ul>'
class TivoHTTPServer(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):
def __init__(self, server_address, RequestHandlerClass):
self.containers = {}
self.stop = False
self.restart = False
self.logger = logging.getLogger('pyTivo')
BaseHTTPServer.HTTPServer.__init__(self, server_address,
RequestHandlerClass)
self.daemon_threads = True
def add_container(self, name, settings):
if name in self.containers or name == 'TiVoConnect':
raise "Container Name in use"
try:
self.containers[name] = settings
except KeyError:
self.logger.error('Unable to add container ' + name)
def reset(self):
self.containers.clear()
for section, settings in config.getShares():
self.add_container(section, settings)
def handle_error(self, request, client_address):
self.logger.exception('Exception during request from %s' %
(client_address,))
def set_beacon(self, beacon):
self.beacon = beacon
def set_service_status(self, status):
self.in_service = status
class TivoHTTPHandler(BaseHTTPServer.BaseHTTPRequestHandler):
def __init__(self, request, client_address, server):
self.wbufsize = 0x10000
self.server_version = 'pyTivo/1.0'
self.protocol_version = 'HTTP/1.1'
self.sys_version = ''
BaseHTTPServer.BaseHTTPRequestHandler.__init__(self, request,
client_address, server)
def address_string(self):
host, port = self.client_address[:2]
return host
def version_string(self):
""" Override version_string() so it doesn't include the Python
version.
"""
return self.server_version
def do_GET(self):
tsn = self.headers.getheader('TiVo_TCD_ID',
self.headers.getheader('tsn', ''))
if not self.authorize(tsn):
return
if tsn and (not config.tivos_found or tsn in config.tivos):
attr = config.tivos.get(tsn, {})
if 'address' not in attr:
attr['address'] = self.address_string()
if 'name' not in attr:
attr['name'] = self.server.beacon.get_name(attr['address'])
config.tivos[tsn] = attr
if '?' in self.path:
path, opts = self.path.split('?', 1)
query = cgi.parse_qs(opts)
else:
path = self.path
query = {}
if path == '/TiVoConnect':
self.handle_query(query, tsn)
else:
## Get File
splitpath = [x for x in unquote_plus(path).split('/') if x]
if splitpath:
self.handle_file(query, splitpath)
else:
## Not a file not a TiVo command
self.infopage()
def do_POST(self):
tsn = self.headers.getheader('TiVo_TCD_ID',
self.headers.getheader('tsn', ''))
if not self.authorize(tsn):
return
ctype, pdict = cgi.parse_header(self.headers.getheader('content-type'))
if ctype == 'multipart/form-data':
query = cgi.parse_multipart(self.rfile, pdict)
else:
length = int(self.headers.getheader('content-length'))
qs = self.rfile.read(length)
query = cgi.parse_qs(qs, keep_blank_values=1)
self.handle_query(query, tsn)
def do_command(self, query, command, target, tsn):
for name, container in config.getShares(tsn):
if target == name:
plugin = GetPlugin(container['type'])
if hasattr(plugin, command):
self.cname = name
self.container = container
method = getattr(plugin, command)
method(self, query)
return True
else:
break
return False
def handle_query(self, query, tsn):
mname = False
if 'Command' in query and len(query['Command']) >= 1:
command = query['Command'][0]
# If we are looking at the root container
if (command == 'QueryContainer' and
(not 'Container' in query or query['Container'][0] == '/')):
self.root_container()
return
if 'Container' in query:
# Dispatch to the container plugin
basepath = query['Container'][0].split('/')[0]
if self.do_command(query, command, basepath, tsn):
return
elif command == 'QueryItem':
path = query.get('Url', [''])[0]
splitpath = [x for x in unquote_plus(path).split('/') if x]
if splitpath and not '..' in splitpath:
if self.do_command(query, command, splitpath[0], tsn):
return
elif (command == 'QueryFormats' and 'SourceFormat' in query and
query['SourceFormat'][0].startswith('video')):
if config.is_ts_capable(tsn):
self.send_xml(VIDEO_FORMATS_TS)
else:
self.send_xml(VIDEO_FORMATS)
return
elif command == 'QueryServer':
self.send_xml(SERVER_INFO)
return
elif command in ('FlushServer', 'ResetServer'):
# Does nothing -- included for completeness
self.send_response(200)
self.send_header('Content-Length', '0')
self.end_headers()
self.wfile.flush()
return
# If we made it here it means we couldn't match the request to
# anything.
self.unsupported(query)
def send_content_file(self, path):
lmdate = os.path.getmtime(path)
try:
handle = open(path, 'rb')
except:
self.send_error(404)
return
# Send the header
mime = mimetypes.guess_type(path)[0]
self.send_response(200)
if mime:
self.send_header('Content-Type', mime)
self.send_header('Content-Length', os.path.getsize(path))
self.send_header('Last-Modified', formatdate(lmdate))
self.end_headers()
# Send the body of the file
try:
shutil.copyfileobj(handle, self.wfile)
except:
pass
handle.close()
self.wfile.flush()
def handle_file(self, query, splitpath):
if '..' not in splitpath: # Protect against path exploits
## Pass it off to a plugin?
for name, container in self.server.containers.items():
if splitpath[0] == name:
self.cname = name
self.container = container
base = os.path.normpath(container['path'])
path = os.path.join(base, *splitpath[1:])
plugin = GetPlugin(container['type'])
plugin.send_file(self, path, query)
return
## Serve it from a "content" directory?
base = os.path.join(SCRIPTDIR, *splitpath[:-1])
path = os.path.join(base, 'content', splitpath[-1])
if os.path.isfile(path):
self.send_content_file(path)
return
## Give up
self.send_error(404)
def authorize(self, tsn=None):
# if allowed_clients is empty, we are completely open
allowed_clients = config.getAllowedClients()
if not allowed_clients or (tsn and config.isTsnInConfig(tsn)):
return True
client_ip = self.client_address[0]
for allowedip in allowed_clients:
if client_ip.startswith(allowedip):
return True
self.send_fixed('Unauthorized.', 'text/plain', 403)
return False
def log_message(self, format, *args):
self.server.logger.info("%s [%s] %s" % (self.address_string(),
self.log_date_time_string(), format%args))
def send_fixed(self, page, mime, code=200, refresh=''):
squeeze = (len(page) > 256 and mime.startswith('text') and
'gzip' in self.headers.getheader('Accept-Encoding', ''))
if squeeze:
out = StringIO()
gzip.GzipFile(mode='wb', fileobj=out).write(page)
page = out.getvalue()
out.close()
self.send_response(code)
self.send_header('Content-Type', mime)
self.send_header('Content-Length', len(page))
if squeeze:
self.send_header('Content-Encoding', 'gzip')
self.send_header('Expires', '0')
if refresh:
self.send_header('Refresh', refresh)
self.end_headers()
self.wfile.write(page)
self.wfile.flush()
def send_xml(self, page):
self.send_fixed(page, 'text/xml')
def send_html(self, page, code=200, refresh=''):
self.send_fixed(page, 'text/html; charset=utf-8', code, refresh)
def root_container(self):
tsn = self.headers.getheader('TiVo_TCD_ID', '')
tsnshares = config.getShares(tsn)
tsncontainers = []
for section, settings in tsnshares:
try:
mime = GetPlugin(settings['type']).CONTENT_TYPE
if mime.split('/')[1] in ('tivo-videos', 'tivo-music',
'tivo-photos'):
settings['content_type'] = mime
tsncontainers.append((section, settings))
except Exception, msg:
self.server.logger.error(section + ' - ' + str(msg))
t = Template(file=os.path.join(SCRIPTDIR, 'templates',
'root_container.tmpl'),
filter=EncodeUnicode)
if self.server.beacon.bd:
t.renamed = self.server.beacon.bd.renamed
else:
t.renamed = {}
t.containers = tsncontainers
t.hostname = socket.gethostname()
t.escape = escape
t.quote = quote
self.send_xml(str(t))
def infopage(self):
t = Template(file=os.path.join(SCRIPTDIR, 'templates',
'info_page.tmpl'),
filter=EncodeUnicode)
t.admin = ''
if config.get_server('tivo_mak') and config.get_server('togo_path'):
t.togo = '<br>Pull from TiVos:<br>'
else:
t.togo = ''
for section, settings in config.getShares():
plugin_type = settings.get('type')
if plugin_type == 'settings':
t.admin += ('<a href="/TiVoConnect?Command=Settings&' +
'Container=' + quote(section) +
'">Settings</a><br>')
elif plugin_type == 'togo' and t.togo:
for tsn in config.tivos:
if tsn and 'address' in config.tivos[tsn]:
t.togo += ('<a href="/TiVoConnect?' +
'Command=NPL&Container=' + quote(section) +
'&TiVo=' + config.tivos[tsn]['address'] +
'">' + config.tivos[tsn]['name'] +
'</a><br>')
self.send_html(str(t))
def unsupported(self, query):
message = UNSUP % '\n'.join(['<li>%s: %s</li>' % (key, repr(value))
for key, value in query.items()])
text = BASE_HTML % message
self.send_html(text, code=404)
def redir(self, message, seconds=2):
url = self.headers.getheader('Referer')
if url:
message += RELOAD % (url, seconds)
refresh = '%d; url=%s' % (seconds, url)
else:
refresh = ''
text = (BASE_HTML % message).encode('utf-8')
self.send_html(text, refresh=refresh)