2011-03-12 Python web login tips

Some times there is need to automitize all tasks.
Like login on page download some info and go out.
There is html parsers they can do such tasks

For example it can be login script for some browser game or mail account that doesnt allow
SMTP or SMTP is not for free.

For example there is web-browser game travian an it after some time playing
it becomes very boring to play because only thing that you do it waiting
while some game events take too many time. Like when you click upgdade
something than you need to wait some hours until finish.

Now here we will make login example.
We need external libraries:
httplib2 http://code.google.com/p/httplib2/
lxml http://lxml.de/

First thing that we need its to get page source.

conn = httplib2.Http("cache")
resp,cont = conn.request("http://travian.com")

<form method="post" name="snd" action="dorf1.php">
	<input class="text" type="text" name="name" value="">
	<input class="text" type="password" name="password" value="" maxlength="20">
	<input type="image" value="login" name="s1" onclick="xy();" id="btn_login" class="dynamic_img">
	<input type="hidden" name="w" value="">
	<input type="hidden" name="login" value="1299937743">
</form>

from lxml.html import parse,tostring,fromstring,submit_form

page = fromstring( cont )
form = page.forms[0] 
for inp in form.inputs:
	if inp.type == "text":
		inp.value = name
	if inp.type == "password":
		inp.value = password

headers = {'Content-type': 'application/x-www-form-urlencoded'}

resp , cont = self.conn.request( self.server+"/"+form.action , "POST" , body=urllib.urlencode(body) , headers=headers )

cookie = resp['set-cookie']

headers = { 'Content-type': 'application/x-www-form-urlencoded' }
headers = { 'Cookie': self.cookie }
body = {}
resp,cont = self.conn.request(self.server+"/logout.php", body=urllib.urlencode(body) , headers=headers)

tmp = page.xpath("/html//div//div//div//div//p//span")

tmp = page.xpath("/html//div//div//div//div//p//span")[2].find_class("none")[0].text_content()

reguest()
find_class()
text_content()
xpath()
fromstring()

2010-12-03 Skype Rich Mood Text Animations

Mood text in skype is simple and not very interactive. Trought skype api there can be done some animations.First step was to test set mood text  trought api.Here is script that directly sends to skype Skype commnd for setting rich mood text. Linux dont support latest skype Protocol 7 (API version 3.0) but on Win there everything words ok. Here you type in commandline
./setrichmood.py "New mood"
and rich mood text changed

import sys
import os
import Skype4Py

skype = Skype4Py.Skype()
skype.Attach()

if len(sys.argv) == 2:
	if os.path.exists( sys.argv[1] ):
		f = open( sys.argv[1] , "r" )
		s = unicode(f.read())
		f.close()
		c = skype.Command( "SET PROFILE RICH_MOOD_TEXT "+s )
		skype.SendCommand( c )
	else:
		s = unicode(sys.argv[1])
		c = skype.Command( "SET PROFILE RICH_MOOD_TEXT "+s )
		skype.SendCommand( c )

Example:

//------------------------------------------------------------------
// For purpose of bit conservation we omit feedback notifications
SET PROFILE RICH_MOOD_TEXT Smiley: <ss type="smile">:-)</ss>
SET PROFILE RICH_MOOD_TEXT <font color="#ff0010">Red text</font>
SET PROFILE RICH_MOOD_TEXT <blink>Blinking text</blink>
SET PROFILE RICH_MOOD_TEXT <b>Bold text</b>
SET PROFILE RICH_MOOD_TEXT <i>Italics</i>
SET PROFILE RICH_MOOD_TEXT <u>Underlined</u>
SET PROFILE RICH_MOOD_TEXT First lineSecond lineThird line

<ss type="smile"></ss> also accepts following smileys:

    * smile, sad, laugh, cool, surprised, wink, cry, sweat, speechless, kiss, tongueout, blush, wonder, sleepy, snooze, dull, inlove, talk, yawn, puke, doh, angry, wasntme, party, worry, mmm, nerdy, lipssealed, hi, call, devil, angel, envy, wait, hug, makeup, giggle, clap, think, bow, rofl, whew, happy, smirk, nod, shake, punch, emo, no, yes, handshake, skype, heart, brokenheart, mail, flower, rain, sun, time, music, movie, phone, coffee, pizza, cash, muscle, beer, drink, dance, ninja, star, mooning, finger, bandit, smoke, toivo, rock, headbang, poolparty, swear, bug, fubar, tmi. 

import sys
import os
import Skype4Py
import time

skype = Skype4Py.Skype()
skype.Attach()

s = []
if os.path.exists( sys.argv[1] ):
	f = open( sys.argv[1] , "r" )
	for line in f:
		s.append(line)
	f.close()
	
while True:
	for frame in s:
		c = skype.Command( "SET PROFILE RICH_MOOD_TEXT "+frame )
		skype.SendCommand( c )
		time.sleep( 1 )

____Bonanza____
___#Bonanza#___
__##Bonanza##__
_###Bonanza###_
####Bonanza####
_###Bonanza###_
__##Bonanza##__
___#Bonanza#___

2010-09-07 Robatik

This is programming game where you have to controll your robots with simple assembler like language. Game is inspired by AutoWars.  Source contains source,small turorial and examples.
Robatik Game

2010-07-26 Snake by wudu

Terminal snake. First project in python by wudu

Author: wudu

Source
Google Code

2010-07-20 Python MIT Binary Trees

After reading chapter form MIT Introduction in algorithms about trees I have implemented same algorithm in pythonI haven't tryed to make best perfomance only easy to understund and one to one like is in pseudo-codeTree python class that are used to represent BinaryTree.

class Tree:
	p = None
	left = None
	right = None
	key = 0

Inorder_Tree_Walk( x )
if x != NIL
    then Inorder_Tree_Walk( left[x] )
        print key[x]
        Inorder_Tree_Walk( right[x] )

def inorder_tree_walk( t ):
    if t != None:
        inorder_tree_walk( t.left )
        print t.key,
        inorder_tree_walk( t.right )

Tree_Search( x , k )
if x = NIL or k = key[x]
    then return x
if k < key[x]
    then return Tree_Search( left[x] , k )
    else return Tree_Search( right[x] , k )

def tree_search( t , k ):
    if (t == None) or (k == t.key):
        return t
    if k < t.key:
        return tree_search( t.left, k )
    return tree_search( t.right, k )

Tree_Minimum( x )
while left[x] != NIL
    do x <- left[x]
return x

def tree_minimum( t ):
    while t.left != None:
        t = t.left
    return t

Tree_Maximum( x )
while right[x] != NIL
    do x <- right[x]
return x

def tree_maximum( t ):
    while t.right != None:
        t = t.right
    return t

def tree_root( t ):
    while ( t.p != None):
        t = t.p
    return t

Tree_Successor( x )
if right[x] != NIL
    then return Tree_Minimum( right[x] )
y <- p[x]
while y != NIL and x = right[y]
    do  x <- y
        y <- p[y]
return y

def tree_successor( t ):
    if t.right != None:
        return tree_minimum( t.right )
    y = t.p
    while (y != None) and (t == y.right):
        t = y
        y = y.p
    return y

Tree_Insert( T , z )
y <- NIL
x <- root[T]
while x != NIL
    do y <- x
        if key[z] < key[x]
            then x <- left[x]
            else x <- right[x]
p[x] <- y
if y = NIL
    then root[T] <- z
    else if key[z] < key[y]
        then left[y] <- z
        else right[y] <- z

def tree_insert( t , z ):
    y = None
    x = tree_root( t )
    while x != None:
        y = x
        if z.key < x.key:
            x = x.left
        else:
            x = x.right
    z.p = y
    if y == None:
        r = tree_root( t )
        r = z
    else:
        if z.key < y.key:
            y.left = z
        else:
            y.right = z

def tree_insert_recrusive( t , z ):
    if t.left == None and t.right == None:
        if z.key < t.key:
            t.left = z
        else:
            t.right = z
        return
    if z.key < t.key:
        tree_insert_recrusive( t.left , z )
    else:
        tree_insert_recrusive( t.right , z )

Tree_Delete( T , z )
if left[z] = NIL or right[z] = NIL
    then y <- z
    else y <- Tree_Successor( z )
if left[y] != NIL
    then x <- left[y]
    else x <- right[y]
if x != NIL
    then p[x] <- p[y]
if p[y] = NIL
    then root[T] <- x
    else if y = left[p[y]]
        then left[p[y]] <- x
        else right[p[y]] <- x
if y != z
    then key[z] <- key[y]
return y

def tree_delete( t , z ):
    if (z.left == None) or (z.right == None):
        y = z
    else:
        y = tree_successor( z )
    if y.left != None:
        x = y.left
    else:
        x = y.right
    if x != None:
        x.p = y.p
    if y.p == None:
        r = tree_root( t )
        r = x
        t = r
    else:
        if y == y.p.left:
            y.p.left = x
        else:
            y.p.right = x
    if y != z:
        z.key = y.key
    return y

keys = [10,6,1,0,3,8,7,9,21,15,11,17,25,23,46]
max_deep = log(len(keys),2)

def create_tree( n=0 , p=None):
    if (len(keys) == 0) or (n >= max_deep):
        return None
    t = Tree()
    t.p = p
    t.key = keys.pop(0)
    t.left = create_tree( n+1 , t )
    t.right = create_tree( n+1 , t)
    return t

def print_tree( t ):
    if (t != None) and (t.key != None):
        if t.left == t.right == None:
            print "Key:%d "%(t.key)
            return
        if t.left.key == None:
            print "Key:%d Right:%d"%(t.key,t.right.key)
            print_tree( t.right )
            return
        if t.right.key == None:
            print "Key:%d Left:%d"%(t.key,t.left.key)
            print_tree( t.left )
            return
        print "Key:%d Left:%d Right:%d"%(t.key,t.left.key,t.right.key)
        print_tree( t.left )
        print_tree( t.right )

t = create_tree()
r = tree_search( t, 10 )
n = Tree()
n.key = 150
tree_insert_recrusive( t , n )
inorder_tree_walk( t )
print ""
tree_delete( t , r )
inorder_tree_walk( t )
print ""
r = tree_root( t )
print r.key

2010-04-24 CVE 2010-1160 Exploiting nano

CVE-2010-1160 Nano Changed File Symlink Privilege EscalationUsualy if I have to edit some file I am using nano editor. It is almost on every distribution and easy and fast to use. Some time ago i hated vim beacouse of Ctrl-D =] and that way used nano or pico. Now I know how to exit from vim :q!. After this bugreported in CVE i was exited to check it out in real life. It is first bug that i have fully tested.This bug is fixed in newest versions. Testing all nano version this bug works on < 2.1.7 versions now on my system is latest nano version and I have compiled many < 2.1.7 versions to test this bug. To get your nano version run:$ nano -VWhen user is editing file nano don't check if it is edited by some one else. When saving file it simply save it and dont check if it was modified. If file was changed by some one else then nano will overwrite it with his text. But it can be changed to symlink that points to other file. How to use it in real life:

1) Open file with nano
2) Change file or set symlink
3) Make changes in file and save file in nano
4) See result in symlinked file

Everytning looks like$nano text.txtNow some one do:$ls -s empty.txt text.txtNano savewhach you save in text.txtIn  python it looks like:

os.remove( "text.txt" )
open( "empty.txt" , "w" ).close()
os.symlink( "empty.txt" , "text.txt"

debug = True
nano = "nano-2.0.9"
user = "user"
sym_path="/home/user/empty.txt"

2010-03-16 Python Manage Lynksys Router

Good fellow asked me to write some script that will help him to turn on/off passway to global network. There was used linksys machine for controlling such stuffHere is some code that login, change some rulles and logout. Also pygtk script that doit in visual way

from linksys import *

ls = LinkSys( "http://192.168.1.1/" )
ls.login( "admin" , "admin" )
ls.setip( STATIC_IP , "gateway" , 10 , 66 , 66 , 66 )
ls.setip( STATIC_IP , "subnet" , 255 , 255 , 255 , 0  )
if ls.response():
	print "Succes"
else:
	print "O_O AIam BAd GUy -^-"
ls.logout()

2009-11-12 Python Skype Sync Status

This script synhronize your status with selected user status.

2009-11-12 Python PyGame Tutorial Fullscreen

fullscreen = False

if event.type == pygame.KEYDOWN:

if event.key == pygame.K_m:		
  if not fullscreen:
    screen = pygame.display.set_mode( (SCREEN_X,SCREEN_Y) , pygame.FULLSCREEN )
    fullscreen = True
  else:
    screen = pygame.display.set_mode( (SCREEN_X,SCREEN_Y) )
    fullscreen = False

2009-10-08 Basic HTTP server

Basic HTTP server. When you type url it shows listing of your local directory. If you tipe with path to file name noting hapens
Use:
http://*.*.*.*:<port>/ -> disk start directory
http://*.*.*.*:<port>/home/ -> home directory

Run:
./server port

Compile:
gcc server.c -o server

C Source

Here is also python source. It runs on port:8081 and prints in terminal HTTP request. You can see what browser sends to server.

Py Source

2009-09-23 Python Pygame Tutorial Randomnes

All boxes moving with same speed in same directions and all boxes have same size and colorMake changes step by step to see result

self.dx = randint(1,BOX_SPEED)
self.dy = randint(1,BOX_SPEED)

self.boxes.append( Box( i*2 , i*2 , randint(BOX_MIN_SIZE,BOX_MAX_SIZE) ,
(i,0,0) ) 

2009-09-23 Python Pygame Tutorial Boxes Move

New class boxes handles many boxes. Number of boxes depends on cpnstant MAX_BOXES.

MAX_BOXES = 100

2009-09-23 PyGame Lorenz attractor

Here is Lorenz attractor whery popular attractor i have used basic coloring tehnique.
Script
PovRay source

2009-09-15 Python Pygame Tutorial Box Move

added constants that helps controlling screen size

SCREEN_X = 500
SCREEN_Y = 500
BOX_SIZE = 20
BOX_SPEED = 1

self.dx = BOX_SPEED
self.dy = BOX_SPEE

def move( self ):
        if self.rect.left+BOX_SIZE > SCREEN_X:
            self.dx = -BOX_SPEED
        if self.rect.left < 0:
            self.dx = BOX_SPEED
        if self.rect.top+BOX_SIZE > SCREEN_Y:
            self.dy = -BOX_SPEED
        if self.rect.top < 0:
            self.dy = BOX_SPEED
        self.rect.left += self.dx
        self.rect.top += self.dy

2009-09-07 Python PyGame Tutorial Box Object

There is new object Box. We can draw, mask and move it.Once you init it you can use it with simple interface

box = Box( position_x , position_y , size ,
(color_red,color_green,color_blue,color_alpha) )

box.move( add_x , add_y )

box.draw()

box.mask()

2009-08-31 Python PyGame Tutorial Image Loading

Draw some image and make for it

surface image = pygame.image.load("image_name.format") 

surface. screen.blit( source_surface , (position_x,position_y) )

2009-08-23 Python PyGame Tutorial Event System

Now you can set application window. But there is one problem you have to terminate application by killing.
Adding event handling help us exit from application by clicking close button or pressing some other button.

for event in pygame.event.get():
if event.type == pygame.QUIT:
    runing = False

2009-08-23 Python PyGame Tutorial Display Setting

First application and we opening window

screen = pygame.display.set_mode( (width_of_window ,height_of_window ) )

pygame.display.set_mode( (width,height), pygame.FULLSCREEN )

2009-08-23 Python PyGame Tutorial

Python Pygame tutorial. This tutorial goal show how to make small and simple pygame pythone script that include all that is need for bigger application. Every tutorial part add only few new lines of code.
Moving Boxes
Goal
Make featured applications with boxes that coaliding one with another.
1. [Set Display]
2. [Event Sytem]
3. [Image loading]
4. [Box object]
5. [Box move]
6. [Boxes move]
7. [Randomnes]
8. [Fullscreen]

2009-07-29 Python Skype Status Check

Script that checks and writes (in case of change) status of Skype users to the SQLite database. Communication with Skype is done via Skype4Py module.