chatango client fix for python 3.x

import ch
import curses
import threading
import sys
import base64
import random
import traceback

# Chatango client by MegaLoler
# Chatango library by Lumirayz
# ported to python 3.2 by ASL97
# version 0.4

#changes:
#default echo to false because it causes some issues
#fixed online list!  although it doesn't show up until someone says something
#fixed a small bug that put the cursor in the wrong place when the user list updated
#added junk to the todo list lol
#added fast deleted/wipe to the client(need to be mod), button "#" ~~~~asl97
#added beep to the client ~~~~ asl97

#todo:
#fix /part ing
#make userlist appear immediately
#add notation in the userlist for moderators/etc
#make the lists on the left and right scrollable
#moderator commands and features (like ips)
#better styling (bold, underline, even blinking and stuff!)
#deal with nonexistant rooms
#add command history with up arrow
#disconnection error handling and stuff
#dynamic sizing
#secret messages to individual people instead of everyone as well
#custom skins
#config file or somethin
#cursor movement with arrow keys
#nick name aliases
#special page for pms
#fix bugs
#fix self pages not appearing with echo on
#saving/loading settings
#OUTPUT MACROS!  that would be epic
#automated responses, and preprogrammed/saved messages, etc
#away feature that tells people you are away if you are away and someone says yourname
#log loading
#name highlighting

activeRoom = None
generalBuffer = []
contents = ["", "", ""]
focus = 1
raw = False
disguise = "*hidden*"
pages = {}
echo = False

screen = curses.initscr()
curses.noecho()
curses.start_color()

HELP_MSG = "Press TAB to switch between the three text feilds at the bottom.  Type in room names on the left to connect to rooms.  Once connected, type in messages in the middle.  Type in private messages on the right.  To toggle between open rooms press \"`\".  To toggle between private message recipients press \"~\".  The selected recipient will be highlighted in red.  Type /commands in the middle when connected to a room to get a list of commands that you can use.  Press ESC twice to exit the client."

size = screen.getmaxyx()
WIDTH = int(size[1])
HEIGHT = int(size[0])
HALF = int(WIDTH / 2)
QUARTER = int(WIDTH / 4)

RED = 1
YELLOW = 2
GREEN = 3
CYAN = 4
BLUE = 5
MAGENTA = 6
NORMAL = 7
SECRET = 8

curses.init_pair(RED, curses.COLOR_RED, curses.COLOR_BLACK)
curses.init_pair(YELLOW, curses.COLOR_YELLOW, curses.COLOR_BLACK)
curses.init_pair(GREEN, curses.COLOR_GREEN, curses.COLOR_BLACK)
curses.init_pair(CYAN, curses.COLOR_CYAN, curses.COLOR_BLACK)
curses.init_pair(BLUE, curses.COLOR_BLUE, curses.COLOR_BLACK)
curses.init_pair(MAGENTA, curses.COLOR_MAGENTA, curses.COLOR_BLACK)
curses.init_pair(NORMAL, curses.COLOR_WHITE, curses.COLOR_BLACK)
curses.init_pair(SECRET, curses.COLOR_BLACK, curses.COLOR_WHITE)

def printLine(string, color=NORMAL):
    generalBuffer.append((string, color))
    while len(generalBuffer) > HEIGHT - 3: del generalBuffer[0]

def addMessage(string, color=NORMAL):
    for string in string.split("\n"):
        buf = ""
        for i in string:
            buf += i
            if len(buf) >= HALF:
                printLine(buf, color)
                buf = ""
        if buf != "": printLine(buf, color)
    if activeRoom == None:
        drawChat()
        screen.refresh()

def hexToDec(h):
    h = h.lower()
    if h == "f":
        return 15
    elif h == "e":
        return 14
    elif h == "d":
        return 13
    elif h == "c":
        return 12
    elif h == "b":
        return 11
    elif h == "a":
        return 10
    else:
        try:
            return int(h)
        except:
            return 0

def hexToAnsi(col):
    if col[0] == "#": col = col[1:]
    if len(col) == 3:
        r = hexToDec(col[0])
        g = hexToDec(col[1])
        b = hexToDec(col[2])
    elif len(col) == 6:
        r = hexToDec(col[0])
        g = hexToDec(col[2])
        b = hexToDec(col[4])
    else:
        return NORMAL

    r = r > 7
    g = g > 7
    b = b > 7

    if r and g and b:
        return NORMAL
    if r and g:
        return YELLOW
    if g and b:
        return CYAN
    if r and b:
        return MAGENTA
    if r:
        return RED
    if g:
        return GREEN
    if b:
        return BLUE
    else:
        return NORMAL

def printLineR(r, string, color=NORMAL):
    r.chatBuffer.append((string, color))
    while len(r.chatBuffer) > HEIGHT - 3: del r.chatBuffer[0]

def addMessageR(r, string, color=NORMAL):
    for string in string.split("\n"):
        buf = ""
        for i in string:
            buf += i
            if len(buf) >= HALF:
                printLineR(r, buf, color)
                buf = ""
        if buf != "": printLineR(r, buf, color)
    if activeRoom == r:
        drawChat()
        screen.refresh()
    else:
        r.new = True
        drawRooms()
        screen.refresh()

def page(user, message):
    if user.lower() in pages.keys():
        pages[user.lower()].append(message)
    else:
        pages[user.lower()] = [message]

def logMessage(message):
    f = open("log", "a")
    f.write(message.user.name + ": " + message.raw + "\n")
    f.close()

def secretEncrypt(message, k):
    message = k + message
    message = base64.b64encode(message.encode('ascii'))
    insert = base64.b64encode(k.encode('ascii')*len(k))[:-2]
    location = random.randint(1, len(message))
    first = message[:location]
    if location == len(message):
        last = ""
    else:
        last = message[location:]
    message = first + insert + last
    message = base64.b64encode(message + k.encode('ascii'))
    return message

def secretDecrypt(message, k):
    m = message
    try:
        message = base64.b64decode(bytes(message.split("'")[1], "ascii"))[:-len(k)]
        insert = base64.b64encode(k.encode('ascii')*len(k))[:-2]
        location = message.find(insert)
        first = message[:location]
        if location == len(message):
            last = ""
        else:
            last = message[location + len(insert):]
        message = first + last
        message = base64.b64decode(message)
        if message.startswith(k.encode('ascii')):
            return str(message)[len(k)+2:-1]
        else:
            raise Exception
    except Exception as e:
        return "ERROR DECRYPTING: " + m + "  " + str(e)

def checkSecret(room, user, message):
    if message.raw.find("<msg=\"") == -1: return False
    msg = message.raw.split("<msg=\"")[1]
    msg2 = ""
    p = None
    for char in msg:
        if char == "\"" and p != "\\": break
        if char == "\\":
            if p == "\\": msg2 += char
        else:
            msg2 += char
        p = char
    addMessageR(room, user.name + ": " + secretDecrypt(msg2, user.name.lower()), SECRET)
    return True

class RoomManager(ch.RoomManager):
    def onHistoryMessage(self, room, user, message):
        checkSecret(room, user, message)
        addMessageR(room, user.name + ": " + message.body, hexToAnsi(message.fontColor))
        drawFields()
        screen.refresh()

    def onMessage(self, room, user, message):
        logMessage(message)
        if checkSecret(room, user, message) or not echo or user.name.lower() != NICK.lower(): addMessageR(room, user.name + ": " + message.body, hexToAnsi(message.fontColor))
        if user.name.lower() in pages.keys():
            for i in pages[user.name.lower()]: room.message("(PAGE) @" + user.name + ": " + i)
            del pages[user.name.lower()]
        curses.beep()
        drawFields()
        screen.refresh()

    def onPMMessage(self, pm, user, body):
        addMessageR(room, "@" + NICK + ": " + user.name + ": " + body, NORMAL)
        drawFields()
        screen.refresh()

    def onPMDisconnect(self, pm):
        addMessageR(room, "PM disconnect", NORMAL)
        drawFields()
        screen.refresh()

    def onLeave(self, room, user):
        addMessageR(room, user.name + " left the room.")
        drawOnline()
        drawFields()
        screen.refresh()

    def onJoin(self, room, user):
        addMessageR(room, user.name + " entered the room.")
        drawOnline()
        drawFields()
        screen.refresh()

    def onConnect(self, room):
        addMessageR(room, "You have connected to " + room.name + ".")
        drawFields()
        screen.refresh()

    def onReconnect(self, room):
        addMessageR(room, "You have reconnected to " + room.name + ".")
        drawFields()
        screen.refresh()

    def onFloodWarning(self, room):
        room.reconnect()

    def onUserCountChange(self, room):
        drawOnline()
        drawFields()
        screen.refresh()

def centerString(string, length):
    off = length - len(string)
    if off > 0:
        l = int(off / 2)
        if off % 2:
            r = l + 1
        else:
            r = l
        return " " * l + string + " " * r
    elif off < 0:
        return string[:length]

def leftString(string, length):
    if len(string) > length:
        return string[:length]
    else:
        off = length - len(string)
        return string  + " " * off

def rightString(string, length):
    if len(string) > length:
        return string[:length]
    else:
        off = length - len(string)
        return string + off * " "

def fieldString(string, length):
    if len(string) > length:
        return string[-length:]
    else:
        off = length - len(string)
        return string + off * " "

def fieldLength(string, length):
    if len(string) > length:
        return length
    else:
        return len(string)

def drawRooms():
    y = 0
    for y in range(len(chatango.roomnames)):
        if y >= HEIGHT - 2: break
        room = list(chatango.roomnames)[y]
        if chatango.getRoom(room).new:
            attr = curses.color_pair(YELLOW) | curses.A_BOLD
        else:
            attr = curses.color_pair(NORMAL)
        if room == activeRoom.name: attr |= curses.A_REVERSE
        screen.addstr(y + 1, 0, leftString(room, QUARTER), attr)
    if len(chatango.roomnames) > 0: y += 1
    while y < HEIGHT - 2:
        screen.addstr(y + 1, 0, leftString("", QUARTER), curses.color_pair(NORMAL))
        y += 1

def drawOnline():
    if not activeRoom:
        users = []
    else:
        users = sorted(activeRoom.usernames)
    y = 0
    for y in range(len(users)):
        if y >= HEIGHT - 2: break
        nick = users[y]
        if activeRoom and activeRoom.activeUser == users[y]:
            attr = curses.color_pair(RED) | curses.A_REVERSE
        else:
            attr = curses.color_pair(NORMAL)
        if nick == activeRoom.name: attr |= curses.A_REVERSE
        screen.addstr(y + 1, HALF + QUARTER, rightString(nick, QUARTER), attr)
    if len(users) > 0: y += 1
    while y < HEIGHT - 2:
        screen.addstr(y + 1, HALF + QUARTER, rightString("", QUARTER), curses.color_pair(NORMAL))
        y += 1

def drawChat():
    if not activeRoom:
        chatBuffer = generalBuffer
    else:
        chatBuffer = activeRoom.chatBuffer
    y = 0
    for y in range(len(chatBuffer)):
        if y >= HEIGHT - 3: break
        message = chatBuffer[y]
        screen.addstr(y + 1, QUARTER, leftString(message[0], HALF), curses.color_pair(message[1]))
    if len(chatBuffer) > 0: y += 1
    while y < HEIGHT - 3:
        screen.addstr(y + 1, QUARTER, leftString("", HALF), curses.color_pair(NORMAL))
        y += 1

def drawField(y, x, content, width, selected, color=NORMAL):
    attr = curses.color_pair(color)
    if selected: attr |= curses.A_REVERSE
    screen.addstr(y, x, fieldString(content, width), attr)
    if selected:
        return (y, x + fieldLength(content, width))
    else:
        return None

def drawFields():
    if activeRoom:
        color = hexToAnsi(chatango.user.fontColor)
    else:
        color = NORMAL
    f1 = drawField(HEIGHT - 1, 0, contents[0], QUARTER - 1, focus == 0)
    f2 = drawField(HEIGHT - 1, QUARTER, contents[1], HALF - 1, focus == 1, color)
    f3 = drawField(HEIGHT - 1, HALF + QUARTER, contents[2], QUARTER - 1, focus == 2, color)
    if f1:
        screen.move(f1[0], f1[1])
    elif f2:
        screen.move(f2[0], f2[1])
    elif f3:
        screen.move(f3[0], f3[1])

def drawHeaders():
    screen.addstr(0, 0, centerString("ROOMS", QUARTER), curses.color_pair(NORMAL) | curses.A_REVERSE)
    screen.addstr(0, QUARTER, centerString("CHATANGO", HALF), curses.color_pair(NORMAL) | curses.A_REVERSE)
    screen.addstr(0, HALF + QUARTER, centerString("ONLINE", QUARTER), curses.color_pair(NORMAL) | curses.A_REVERSE)

def drawContent():
    drawRooms()
    drawOnline()
    drawChat()

def drawInterface():
    drawHeaders()
    drawContent()
    drawFields()
    screen.refresh()

def alreadyConnected(room):
    chatango.getRoom(room)

def switchRoom(room):
    global activeRoom
    activeRoom = room
    room.new = False
    drawContent()
    drawHeaders()

def hide(message, hidden):
    if hidden:
        return "*" * len(message)
    else:
        return message

def dialogue(prompt, hidden=False):
    screen.border(0)
    screen.addstr(int(HEIGHT / 2), HALF - len(prompt), prompt)
    screen.refresh()

    RESULT = ""
    while True:
        c = screen.getch()
        if c == 10 and RESULT != "":
            RESULT = RESULT.strip()
            break
        elif c == 127:
            if RESULT != "": RESULT = RESULT[:-1]
            screen.addstr(int(HEIGHT / 2), HALF, leftString(hide(RESULT, hidden), HALF))
            screen.border(0)
            screen.move(int(HEIGHT / 2), HALF + len(RESULT))
            screen.refresh()
        elif c == 27:
            curses.endwin()
            sys.exit()
        else:
            if len(RESULT) < HALF - 1:
                RESULT += chr(c)
                if hidden:
                    display = "*" * len(RESULT)
                else:
                    display = RESULT
                screen.addstr(int(HEIGHT / 2), HALF, leftString(hide(RESULT, hidden), HALF))
                screen.border(0)
                screen.move(int(HEIGHT / 2), HALF + len(RESULT))
                screen.refresh()

    screen.erase()
    return RESULT

NICK = dialogue("Enter your username: ")
PASS = dialogue("Enter your password: ", True)

chatango = RoomManager(NICK, PASS)
chatango._userlistMode = ch.Userlist_All
chatango_thread = threading.Thread(target=chatango.main,)
chatango_thread.setDaemon(True)
chatango_thread.start()
drawInterface()

addMessage("Welcome to MegaLoler's Chatango client!\npatch by ASL97 for python 3.x\nJoin a room to get started.")

esc = False
while True:
    drawFields() #perhaps make more effient later
    c = screen.getch()
    if c == 10: # Enter
        msg = contents[focus].strip()
        if msg != "":
            contents[focus] = ""
            if focus == 0:
                r = alreadyConnected(msg)
                if r == None:
                    chatango.joinRoom(msg)
                    room = chatango.getRoom(msg)
                    room.chatBuffer = []
                    room.activeUser = None
                    room.new = False
                    switchRoom(room)
                else:
                    switchRoom(r)
            elif focus == 1:
                if activeRoom:
                    if msg[0] == "/":
                        msg = msg[1:]
                        if msg != "":
                            parts = msg.split(" ")
                            cmd = parts[0].lower()
                            if len(parts) == 1:
                                pars = []
                            else:
                                pars = parts[1:]
                            par = " ".join(pars)
                            if cmd == "color":
                                chatango.setFontColor(par)
                                drawChat()
                            elif cmd == "namecolor":
                                chatango.setNameColor(par)
                                drawOnline()
                            elif cmd == "msg":
                                activeRoom.message("<msg=\"" + str(secretEncrypt(par, NICK.lower())) + "\"></msg>" + disguise, True)
                            elif cmd == "help":
                                addMessageR(activeRoom, HELP_MSG)
                            elif cmd == "page":
                                if len(pars) > 1:
                                    page(pars[0], " ".join(pars[1:]))
                                    addMessageR(activeRoom, "The message will be sent when " + pars[0] + " is next seen.")
                                else:
                                    addMessageR(activeRoom, "The syntax is /page [user] [message].")
                            elif cmd == "pages":
                                if par == "":
                                    if len(pages.keys()):
                                        addMessageR(activeRoom, "Pages are queued for the following users: " + ", ".join(pages.keys()) + ".")
                                    else:
                                        addMessageR(activeRoom, "No pages are queued.")
                                else:
                                    if par.lower() in pages.keys():
                                        addMessageR(activeRoom, "The user " + par + " has the following pages queued:\n" + "\n".join(pages[par.lower()]))
                                    else:
                                        addMessageR(activeRoom, "The user " + par + " does not have any pages queued.")
                            elif cmd == "disguise":
                                disguise = par
                                addMessageR(activeRoom, "Disguise set to \"" + disguise + "\".")
                            elif cmd == "clear":
                                activeRoom.chatBuffer = []
                                addMessageR(activeRoom, "Cleared the screen.")
                            elif cmd == "raw":
                                raw = not raw
                                if raw:
                                    addMessageR(activeRoom, "Raw mode is now ON.")
                                else:
                                    addMessageR(activeRoom, "Raw mode is now OFF.")
                            elif cmd == "echo":
                                echo = not echo
                                if echo:
                                    addMessageR(activeRoom, "Echo mode is now ON.")
                                else:
                                    addMessageR(activeRoom, "Echo mode is now OFF.")
                            elif cmd == "part":
                                for i in range(len(chatango._rooms)):
                                    if list(chatango.roomnames)[i] == activeRoom.name: break
                                chatango.leaveRoom(activeRoom.name)
                                if len(chatango.roomnames) > 0:
                                    i %= len(chatango.roomnames)
                                    switchRoom(list(chatango.rooms)[i])
                                else:
                                    activeRoom = None
                                    drawContent()

                            else:
                                addMessageR(activeRoom, "Commands: /color [color] (sets your font color), /namecolor [color] (sets your name color), /part (disconnect from the current room), /help (get help on how to use this client), /raw (toggles raw mode which allows you to type with html formatting), /clear (clears the screen), /msg [message] (sends a secret message that only special people can see, and the message will appear to others as defined by the /disguise command to obfuscate the fact that you are sending secret messages), /disguise [message] (sets the disguise message for use with the /msg command), /page [user] [message] (queue a message that will be sent when a certain user is seen), /pages (user) (lists any currently queued pages), /echo (toggles echo mode which echos user input immediately rather than waiting for it to echo from the server)")
                    else:
                        activeRoom.message(msg, raw)
                        if echo: addMessageR(activeRoom, NICK + ": " + msg, hexToAnsi(chatango.user.fontColor))
                else:
                    if msg == "/help":
                        addMessage(HELP_MSG)
                    else:
                        addMessage("You are not connected to any rooms!  Type /help for help.")
            elif focus == 2:
                if activeRoom and activeRoom.activeUser:
                    chatango.pm.message(ch.User(activeRoom.activeUser), msg)
                    addMessageR(activeRoom, "@" + activeRoom.activeUser + ": " + NICK + ": " + msg, hexToAnsi(chatango.user.fontColor))
            drawFields()
            screen.refresh()
    elif c == 9: # Tab
        focus = (focus + 1) % 3
        drawFields()
        screen.refresh()
    elif c == 96: # `
        if len(chatango.roomnames) > 0:
            for i in range(len(chatango.roomnames)):
                if list(chatango.roomnames)[i] == activeRoom.name: break
            i = (i + 1) % len(chatango.roomnames)
            switchRoom(list(chatango.rooms)[i])
    elif c == 126: # ~
        if activeRoom:
            if len(activeRoom.usernames) > 0:
                users = sorted(activeRoom.usernames)
                for i in range(len(users)):
                    if users[i] == activeRoom.activeUser: break
                i = (i + 1) % (len(activeRoom.usernames))
                activeRoom.activeUser = users[i]
                drawOnline()
    elif c == 127: # Backspace
        if contents[focus] != "": contents[focus] = contents[focus][:-1]
        drawFields()
        screen.refresh()
    elif c == 27: # Esc
        if esc:
            break
        else:
            esc = True
            continue

    elif c == 35: # #  \  95 : _
        if activeRoom:
            try:
                msg = room._history[-1]
                if msg:
                    room.rawClearUser(msg.unid)
                    drawFields()
                    screen.refresh()
            except:
                pass

    else:
        contents[focus] += chr(c)
        drawFields()
        screen.refresh()
    esc = False

chatango.stop()
curses.endwin()