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comparison data_generation/transformations/pycaptcha/modpython_example.py @ 167:1f5937e9e530

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More moves - transformations into data_generation, added "deep" folder
author Dumitru Erhan <dumitru.erhan@gmail.com>
date Fri, 26 Feb 2010 14:15:38 -0500
parents pycaptcha/modpython_example.py@4775b4195b4b
children
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166:17ae5a1a4dd1 167:1f5937e9e530
1 #
2 # An example that presents CAPTCHA tests in a web environment
3 # and gives the user a chance to solve them.
4 #
5 # This example is for use with Apache using mod_python and its
6 # Publisher handler. For example, if your apache configuration
7 # included something like:
8 #
9 # AddHandler python-program .py
10 # PythonHandler mod_python.publisher
11 #
12 # You could place this script anywhere in your web space to see
13 # the demo.
14 #
15 # --Micah <micah@navi.cx>
16 #
17
18 from Captcha.Visual import Tests
19 import Captcha
20 from mod_python import apache
21
22
23 def _getFactory(req):
24 return Captcha.PersistentFactory("/tmp/pycaptcha_%s" % req.interpreter)
25
26
27 def test(req, name=Tests.__all__[0]):
28 """Show a newly generated CAPTCHA of the given class.
29 Default is the first class name given in Tests.__all__
30 """
31 test = _getFactory(req).new(getattr(Tests, name))
32
33 # Make a list of tests other than the one we're using
34 others = []
35 for t in Tests.__all__:
36 if t != name:
37 others.append('<li><a href="?name=%s">%s</a></li>' % (t,t))
38 others = "\n".join(others)
39
40 return """<html>
41 <head>
42 <title>PyCAPTCHA Example</title>
43 </head>
44 <body>
45 <h1>PyCAPTCHA Example (for mod_python)</h1>
46 <p>
47 <b>%s</b>:
48 %s
49 </p>
50
51 <p><img src="image?id=%s"/></p>
52 <p>
53 <form action="solution" method="get">
54 Enter the word shown:
55 <input type="text" name="word"/>
56 <input type="hidden" name="id" value="%s"/>
57 </form>
58 </p>
59
60 <p>
61 Or try...
62 <ul>
63 %s
64 </ul>
65 </p>
66
67 </body>
68 </html>
69 """ % (test.__class__.__name__, test.__doc__, test.id, test.id, others)
70
71
72 def image(req, id):
73 """Generate an image for the CAPTCHA with the given ID string"""
74 test = _getFactory(req).get(id)
75 if not test:
76 raise apache.SERVER_RETURN, apache.HTTP_NOT_FOUND
77 req.content_type = "image/jpeg"
78 test.render().save(req, "JPEG")
79 return apache.OK
80
81
82 def solution(req, id, word):
83 """Grade a CAPTCHA given a solution word"""
84 test = _getFactory(req).get(id)
85 if not test:
86 raise apache.SERVER_RETURN, apache.HTTP_NOT_FOUND
87
88 if not test.valid:
89 # Invalid tests will always return False, to prevent
90 # random trial-and-error attacks. This could be confusing to a user...
91 result = "Test invalidated, try another test"
92 elif test.testSolutions([word]):
93 result = "Correct"
94 else:
95 result = "Incorrect"
96
97 return """<html>
98 <head>
99 <title>PyCAPTCHA Example</title>
100 </head>
101 <body>
102 <h1>PyCAPTCHA Example</h1>
103 <h2>%s</h2>
104 <p><img src="image?id=%s"/></p>
105 <p><b>%s</b></p>
106 <p>You guessed: %s</p>
107 <p>Possible solutions: %s</p>
108 <p><a href="test">Try again</a></p>
109 </body>
110 </html>
111 """ % (test.__class__.__name__, test.id, result, word, ", ".join(test.solutions))
112
113 ### The End ###