119 lines
3.4 KiB
Python
119 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright(C) 2009-2010 Romain Bignon
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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import hashlib
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import sys
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import Image
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class TileError(Exception):
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def __init__(self, msg, tile = None):
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Exception.__init__(self, msg)
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self.tile = tile
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class Captcha(object):
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def __init__(self, file):
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self.inim = Image.open(file)
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self.nx,self.ny = self.inim.size
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self.inmat = self.inim.load()
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self.map = {}
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self.tiles = [[Tile(x+5*y+1) for y in xrange(5)] for x in xrange(5)]
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def __getitem__(self, (x, y)):
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return self.inmat[x % self.nx, y % self.ny]
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def all_coords(self):
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for y in xrange(self.ny):
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for x in xrange(self.nx):
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yield x, y
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def get_codes(self, code):
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s = ''
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for c in code:
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s += '%02d' % self.map[int(c)].id
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return s
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def build_tiles(self):
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y = 1
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ty = 0
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while y < self.ny:
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x = 1
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tx = 0
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while x < self.nx:
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tile = self.tiles[tx][ty]
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for j in xrange(26):
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l = []
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tile.map.append(l)
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for i in xrange(26):
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if self[x+i,y+j] > 20:
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l.append('.')
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tile.valid = True
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else:
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l.append(' ')
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if tile.valid:
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self.map[tile.get_num()] = tile
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x += 27
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tx += 1
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y += 27
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ty += 1
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class Tile(object):
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hash = {'4a6eff78f6c6f172b75bf9fd7fd36d5d': 0,
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'70019df58ec6e96d983507de86529058': 1,
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'683a3700dbd1b9019b5ad3ca39c545d3': 2,
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'998935d6f4111bd586001468a9c705a7': 3,
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'a5cca8bf800fa505cf7ae5039b0cc73c': 4,
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'2317a585e19c4f245cdc8acda51e4542': 5,
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'956958628d014f6e6bf59d88cd254dc6': 6,
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'13c35a4e7bf18e95186311876e66dd95': 7,
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'736894876d76899a5cfecc745b095121': 8,
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'ff41cd68224bece411c7fc876ab05a1d': 9
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}
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def __init__(self, _id):
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self.id = _id
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self.valid = False
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self.map = []
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def __repr__(self):
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return "<Tile(%02d) valid=%s>" % (self.id, self.valid)
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def checksum(self):
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s = ''
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for pxls in self.map:
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for pxl in pxls:
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s += pxl
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return hashlib.md5(s).hexdigest()
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def get_num(self):
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sum = self.checksum()
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try:
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return self.hash[sum]
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except KeyError:
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raise TileError('Tile not found', self)
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def display(self):
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for pxls in self.map:
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for pxl in pxls:
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sys.stdout.write(pxl)
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sys.stdout.write('\n')
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print self.checksum()
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