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#!/usr/bin/python -O
#
# Description:
# ------------
# This is the server-side portion of the Trusted User package
# manager. This program will receive uploads from its client-side
# couterpart, tupkg. Once a package is received and verified, it
# is placed in a specified temporary incoming directory where
# a separate script will handle migrating it to the AUR. For
# more information, see the ../README.txt file.
#
# Python Indentation:
# -------------------
# For a vim: line to be effective, it must be at the end of the
# file. See the end of the file for more information.
import sys
import socket
import threading
import select
import struct
import cgi
import urllib
import md5
import MySQLdb
import MySQLdb.connections
import ConfigParser
import getopt
import os.path
CACHEDIR = '/var/cache/tupkgs/'
CONFIGFILE = '/etc/tupkgs.conf'
config = ConfigParser.ConfigParser()
class ClientFile:
def __init__(self, filename, actual_size, actual_md5):
self.pathname = CACHEDIR + filename
self.filename = filename
self.fd = open(self.pathname, "w+b")
self.actual_size = actual_size
self.actual_md5 = actual_md5
def getSize(self):
cur = self.fd.tell()
self.fd.seek(0,2)
self.size = self.fd.tell()
self.fd.seek(cur)
def makeMd5(self):
md5sum = md5.new()
cur = self.fd.tell()
self.getSize()
self.fd.seek(0)
while self.fd.tell() != self.size:
md5sum.update(self.fd.read(1024))
self.fd.seek(cur)
self.md5 = md5sum.hexdigest()
class ClientSocket(threading.Thread):
def __init__(self, sock, **other):
threading.Thread.__init__(self, *other)
self.socket = sock
self.running = 1
self.files = []
def close(self):
self.running = 0
def reliableRead(self, size):
totalread = ""
while len(totalread) < size:
read = self.socket.recv(size-len(totalread))
if read == 0:
raise RuntimeError, "socket connection broken"
totalread += read
return totalread
def sendMsg(self, msg):
if type(msg) == dict:
msg = urllib.unquote(urllib.urlencode(msg,1))
length = struct.pack("H", socket.htons(len(msg)))
self.socket.sendall(length)
self.socket.sendall(msg)
def readMsg(self, format=0):
initsize = self.reliableRead(2)
(length,) = struct.unpack("H", initsize)
length = socket.ntohs(length)
data = self.reliableRead(length)
if format == 1:
qs = cgi.parse_qs(data)
return qs
else:
return data
def auth(self):
authdata = self.readMsg()
print authdata
# Do auth stuff here
self.sendMsg("result=PASS")
def readFileMeta(self):
files = self.readMsg(1)
print files
# Actually do file checking, et al
for i in range(int(files['numpkgs'][0])):
self.files.append(ClientFile(files['name'+str(i)][0], int(files['size'+str(i)][0]), files['md5sum'+str(i)][0]))
new_files = files.copy()
for i in files:
if i[:4] == 'size':
new_files[i] = '0'
if i[:6] == 'md5sum':
del new_files[i]
self.sendMsg(new_files)
def readFiles(self):
for i in self.files:
count = 0
while count != i.actual_size:
if count + 1024 > i.actual_size:
i.fd.write(self.reliableRead(i.actual_size - count))
count += i.actual_size - count
else:
i.fd.write(self.reliableRead(1024))
count += 1024
i.fd.flush()
reply = {'numpkgs': len(self.files)}
for i, v in enumerate(self.files):
v.makeMd5()
if v.actual_md5 == v.md5:
reply['md5sum'+str(i)] = "PASS"
else:
reply['md5sum'+str(i)] = "FAIL"
self.sendMsg(reply)
print self.readMsg()
def run(self):
self.auth()
self.readFileMeta()
self.readFiles()
class ServerSocket(threading.Thread):
def __init__(self, port=1034, maxqueue=5, **other):
threading.Thread.__init__(self, *other)
self.running = 1
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.bind(('', port))
self.socket.listen(maxqueue)
self.clients = []
def _clean(self, client):
if not client.isAlive():
return 0
return 1
def close(self):
self.socket.close()
self.running = 0
def run(self):
while self.running:
sread, swrite, serror = select.select([self.socket],[self.socket],[self.socket],5)
if sread:
(clientsocket, address) = self.socket.accept()
print "New connection from " + str(address)
ct = ClientSocket(clientsocket)
ct.start()
self.clients.append(ct)
self.clients = filter(self._clean, self.clients)
self.socket.close()
[x.close() for x in self.clients]
[x.join() for x in self.clients]
def usage(name):
print "usage: " + name + " [options]"
print "options:"
print " -c, --config Specify an alternate config file (default " + CONFIGFILE + ")"
sys.exit(2)
def main(argv=None):
if argv is None:
argv = sys.argv
try:
optlist, args = getopt.getopt(argv[1:], "c:", ["config="])
except getopt.GetoptError:
usage(argv[0])
conffile = CONFIGFILE
for i, k in optlist:
if i in ('-c', '--config'):
conffile = k
if not os.path.isfile(conffile):
print "Error: cannot access config file ("+conffile+")"
usage(argv[0])
config.read(conffile)
running = 1
print "Starting ServerSocket"
servsock = ServerSocket()
servsock.start()
try:
while running:
# Maybe do stuff here?
pass
except KeyboardInterrupt:
running = 0
print "Cleaning up stuff"
servsock.close()
servsock.join()
return 0
if __name__ == "__main__":
sys.exit(main())
# Python Indentation:
# -------------------
# Use tabs not spaces. If you use vim, the following comment will
# configure it to use tabs.
#
# vim:noet:ts=2 sw=2 ft=python
|
