5 files changed, 236 insertions, 0 deletions
diff --git a/cholerab/cholerab-live/README b/cholerab/cholerab-live/README
new file mode 100644
index 00000000..b778b98c
--- /dev/null
+++ b/cholerab/cholerab-live/README
@@ -0,0 +1,6 @@
+
+view.py: contains view classes for cholerab
+cholerab.py: main file
+
+start with :
+python cholerab.py
diff --git a/cholerab/cholerab-live/chol_net.py b/cholerab/cholerab-live/chol_net.py
new file mode 100644
index 00000000..ee0f5378
--- /dev/null
+++ b/cholerab/cholerab-live/chol_net.py
@@ -0,0 +1,82 @@
+from socket import socket, AF_INET,SOCK_DGRAM,IPPROTO_UDP,SOL_SOCKET,SO_REUSEADDR,IP_MULTICAST_TTL,IP_MULTICAST_LOOP,INADDR_ANY,inet_aton,IP_ADD_MEMBERSHIP,IPPROTO_IP
+import struct
+import threading 
+import logging
+log = None
+from select import select
+GROUP = '224.110.42.23'
+PORT  = 42023
+log = logging.getLogger('CholerabNet')
+class CholerabMulicastNet(threading.Thread):
+  def __init__(self,cholerab,group=GROUP,port=PORT):
+    threading.Thread.__init__(self)
+    self.cholerab=cholerab
+    self.group=group
+    self.port=port
+    self.initSocket()
+  def send_char(self,x,y,char):
+    """ translates given params into network message """
+    self.send_mc("%s %d %d" %(str(ord(char)),x,y))
+  def send_mc(self,arg):
+    """ Sends message via multicast"""
+    try:
+      log.debug("Sending '%s' to %s:%d" % (arg,self.group,self.port)) 
+      self.ignore_next += 1# we need this to work together correctly with reused sockets
+      self.s.sendto("%s" % arg,0,(self.group,self.port))
+    except Exception ,e:
+      self.ignore_next -=1
+      log.error("IN send_mc:%s"%str(e))
+
+  def initSocket (self,rcv=1):
+    ''' Initializes a Multicast socket '''
+    host = ''
+    log.debug("Setting up Multicast Socket")
+    self.s = socket(AF_INET,SOCK_DGRAM, IPPROTO_UDP)
+    self.s.setsockopt(SOL_SOCKET, SO_REUSEADDR, 1)
+    self.s.setsockopt(IPPROTO_IP, IP_MULTICAST_TTL, 32)
+    self.s.setsockopt(IPPROTO_IP,IP_MULTICAST_LOOP,1) # we do not want our own packets to be replayed 
+    if rcv==1:
+      log.debug("Configuring for Read AND Write")
+      self.s.bind((host,PORT))
+      mreq = struct.pack("4sl", inet_aton(GROUP), INADDR_ANY)
+      self.s.setsockopt(IPPROTO_IP,IP_ADD_MEMBERSHIP,mreq)
+  def run(self):
+    self.running = 1
+    self.ignore_next = 0
+    while self.running:
+      # break if we do not want to loop on
+      ready,output,exception = select([self.s],[],[],1) # try every second
+      for r in ready:
+        if r == self.s:
+          log.debug(str(self.ignore_next))
+          (data,addr) = self.s.recvfrom(1024)
+          if not self.ignore_next:
+            log.debug("Received Data from %s, data %s"%(str(addr),str(data)))
+            self.receive_net(addr,data)
+          else:
+            self.ignore_next -= 1 
+
+  def send_stupid(self,addr):
+    """ sends YOU ARE MADE OF STUPID to the right host """
+    #TODO implement me
+    pass
+
+  def receive_net(self,addr,data):
+    """ resolves which nick sent the message
+    TODO handle user resolution in mulicast """
+    try: 
+      address,port = addr
+      arr = str(data).split()
+      char = arr[0]
+      x = arr[1]
+      y = arr[2]
+      self.cholerab.write_char(int(x),int(y),chr(int(char)))
+    except Exception, e:
+      log.error("Triggered YOU ARE MADE OF STUPID: %s" % str(e))
+      self.send_stupid(addr)
+
+  def stop(self):
+    '''
+    stops the whole treading stuff gracefully
+    '''
+    self.running=0
diff --git a/cholerab/cholerab-live/chol_net.pyc b/cholerab/cholerab-live/chol_net.pyc
new file mode 100644
index 00000000..0694ad6d
--- /dev/null
+++ b/cholerab/cholerab-live/chol_net.pyc
diff --git a/cholerab/cholerab-live/cholerab.py b/cholerab/cholerab-live/cholerab.py
new file mode 100755
index 00000000..eb9e66df
--- /dev/null
+++ b/cholerab/cholerab-live/cholerab.py
@@ -0,0 +1,36 @@
+#!/usr/bin/python2
+# -*- coding: utf-8 -*-
+import curses,time
+from view import CursesView
+from chol_net import CholerabMulicastNet
+import logging
+logging.basicConfig(filename='here.log',level=logging.DEBUG)
+log = logging.getLogger('main')
+class Cholerab:
+  def __init__(self):
+    self.view = CursesView(cholerab=self)
+    self.transport = CholerabMulicastNet(cholerab=self)
+  def send_char(self,x,y,char):
+    log.info("Sending %s at (%d,%d) to connected peers" %(char,x,y))
+    self.transport.send_char(x,y,char)
+
+  def write_char(self,x,y,char):
+    log.info("Writing %s at (%d,%d) to view" %(char,x,y))
+    self.view.write_char(x,y,char,user=2)
+  def stop(self):
+    self.view.stop()
+    self.transport.stop()
+  def main(self):
+    self.view.start()
+    self.transport.start()
+    self.view.join()
+    #after view dies, kill the transport as well
+    self.transport.stop() 
+    self.transport.join()
+def main():
+  log.debug('started main')
+  chol = Cholerab()
+  chol.main()
+
+if __name__ == "__main__":
+  main()
diff --git a/cholerab/cholerab-live/view.py b/cholerab/cholerab-live/view.py
new file mode 100644
index 00000000..6a75f655
--- /dev/null
+++ b/cholerab/cholerab-live/view.py
@@ -0,0 +1,112 @@
+#!/usr/bin/python2
+
+from curses import *
+import socket
+import threading
+import logging
+log = logging.getLogger('cholerab-curses')
+
+class CursesView(threading.Thread):
+  def addch(self,char):
+    """
+    adds a char at the current cursor position
+    abstraction to the curses win.addch()
+    """
+    try: self.win.addch(char)
+    except: pass
+    self.cholerab.send_char(self.x,self.y,chr(char))
+  def stop(self):
+    #TODO setting back the whole terminal currently does not work correctly, fix me harder
+    self.running = False
+    self.clear()
+    self.win.refresh()
+    nocbreak(); self.scr.keypad(0); echo()
+    #endwin()
+
+  def run(self):
+    """
+    input loop
+
+    TODO add Unicode Input Support
+    """
+    self.running = True
+    def try_move(x,y):
+      if x >= self.width: x = 0;y = y+1
+      if x < 0 : x = self.width-1; y= y-1
+      if y >= self.height : x = x+1;y = 0
+      if y < 0 : x = x-1; y = self.height-1
+      self.win.move(y,x); return x,y
+
+    while self.running:
+      c = self.scr.getch() #get_char(self.scr) 
+                           #TODO UTF8 here, get_wch not yet implemented
+      log.debug("Pressed : %d" % c)
+      if c == KEY_LEFT : self.x -=1
+      elif c == KEY_RIGHT : self.x +=1
+      elif c == KEY_UP : self.y -=1
+      elif c == KEY_DOWN : self.y +=1
+      elif c == ord('q') : self.stop()
+      elif c == 127 or c == KEY_BACKSPACE: 
+        log.info('backspace pressed')
+        self.x -=1; 
+        self.x,self.y = try_move(self.x,self.y)
+        self.addch(ord(' '))
+      elif c == ord('\n'): 
+        log.info('enter pressed')
+        self.y +=1; 
+        self.x,self.y = try_move(self.x,self.y)
+      else : 
+        self.addch(c) 
+        self.x +=1
+      self.x,self.y = try_move(self.x,self.y)
+      self.refresh()
+
+  def write_char(self,x,y,char,user=1):
+    user = user % 3 + 1
+    self.win.addch(y,x,char,color_pair(user))
+    self.win.move(self.y,self.x)
+    self.refresh()
+  def write_str(self,x,y,string,user=1):
+    self.win.addstr(y,x,string,color_pair(user))
+    self.win.move(self.y,self.x)
+    self.refresh()
+  def refresh(self):
+    self.scr.refresh()
+    self.win.refresh()
+  def clear(self):
+    self.win.clear()
+    pass
+  def write_field(self,ar):
+    """
+    writes the whole field with given 2-dimensional array
+    """
+    self.clear()
+    pass
+
+  def __init__(self,height=24,width=80,cholerab=None,scr=None):
+    # TODO handle sessions somehow
+    if scr:
+     self.scr = scr
+    else:
+     self.scr = initscr()
+    start_color()
+    init_pair(1,COLOR_WHITE,COLOR_BLACK)
+    init_pair(2,COLOR_RED,COLOR_BLACK)
+    init_pair(3,COLOR_GREEN,COLOR_BLACK)
+    init_pair(3,COLOR_CYAN,COLOR_BLACK)
+    threading.Thread.__init__(self)
+    self.cholerab = cholerab
+
+    noecho()
+    cbreak()
+    self.scr.keypad(1)
+    try: curs_set(2)
+    except: pass # go home with your non-standard terminals!
+
+    begin_x = 0;begin_y = 0
+    self.height = height
+    self.width = width
+    self.x = 0 ; self.y = 0
+
+    self.win = newwin(height,width,begin_y,begin_x)
+    self.clear()