annotate fileserver/web.py @ 7:4d1852cfc077

rudimentary test for directory server
author Jeff Hammel <jhammel@mozilla.com>
date Wed, 29 Feb 2012 14:48:53 -0800
parents 8fb047af207a
children 8127dde8da22
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1 #!/usr/bin/env python
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2
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3 """
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4 WSGI app for FileServer
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5
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6 Reference:
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7 - http://docs.webob.org/en/latest/file-example.html
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8 """
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9
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10 import mimetypes
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11 import optparse
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12 import os
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13 import sys
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14 from webob import Request, Response, exc
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15 from wsgiref.simple_server import make_server
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16
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17 __all__ = ['get_mimetype', 'file_response', 'FileApp', 'DirectoryServer']
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18
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19 def get_mimetype(filename):
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20 type, encoding = mimetypes.guess_type(filename)
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21 # We'll ignore encoding, even though we shouldn't really
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22 return type or 'application/octet-stream'
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23
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24 def file_response(filename):
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25 res = Response(content_type=get_mimetype(filename))
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26 res.body = open(filename, 'rb').read()
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27 return res
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28
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29 class FileApp(object):
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30 """
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31 serve static files
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32 """
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33
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34 def __init__(self, filename):
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35 self.filename = filename
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36
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37 def __call__(self, environ, start_response):
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38 res = file_response(self.filename)
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39 return res(environ, start_response)
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40
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41 class DirectoryServer(object):
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42
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43 def __init__(self, directory):
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44 assert os.path.exists(directory), "'%s' does not exist" % directory
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45 assert os.path.isdir(directory), "'%s' is not a directory" % directory
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46 self.directory = self.normpath(directory)
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47
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48 @staticmethod
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49 def normpath(path):
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50 return os.path.normcase(os.path.abspath(path))
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51
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52 def index(self, directory):
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53 """
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54 generate a directory listing for a given directory
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55 """
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56 parts = ['<html><head><title>Simple Index</title></head><body>']
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57 listings = os.listdir(directory)
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58 listings = [(os.path.isdir(os.path.join(directory, entry)) and entry + '/' or entry, entry)
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59 for entry in listings]
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60 for link, entry in listings:
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61 parts.append('<a href="%s">%s</a><br/>' % (link, entry))
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62 parts.append('</body></html>')
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63 return '\n'.join(parts)
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64
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65 def __call__(self, environ, start_response):
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66 request = Request(environ)
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67 # TODO method_not_allowed: Allow: GET, HEAD
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68 path_info = request.path_info
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69 if not path_info:
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70 pass # self.add slash
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71 full = self.normpath(os.path.join(self.directory, path_info.strip('/')))
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72
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73 if not full.startswith(self.directory):
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74 print 'OUT OF BOUNDS!'
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75 import pdb; pdb.set_trace()
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76 # Out of bounds
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77 return exc.HTTPNotFound()(environ, start_response)
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78 if not os.path.exists(full):
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79 return exc.HTTPNotFound()(environ, start_response)
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80
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81 if os.path.isdir(full):
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82 # serve directory index
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83 if not path_info.endswith('/'):
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84 return self.add_slash(environ, start_response)
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85 index = self.index(full)
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86 response_headers = [('Content-Type', 'text/html'),
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87 ('Content-Length', str(len(index)))]
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88 response = Response(index, content_type='text/html')
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89 return response(environ, start_response)
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90
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91 # serve file
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92 if path_info.endswith('/'):
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93 # we create the `full` filename above by stripping off
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94 # '/' from both sides; so we correct here
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95 return exc.HTTPNotFound()(environ, start_response)
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96 response = file_response(full)
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97 return response(environ, start_response)
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98
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99 def main(args=sys.argv[1:]):
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100
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101 # parse command line arguments
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102 usage = '%prog [options] directory'
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103 class PlainDescriptionFormatter(optparse.IndentedHelpFormatter):
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104 """description formatter"""
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105 def format_description(self, description):
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106 if description:
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107 return description + '\n'
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108 else:
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109 return ''
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110 parser = optparse.OptionParser(usage=usage, description=__doc__, formatter=PlainDescriptionFormatter())
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111 parser.add_option('-p', '--port', dest='port',
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112 type='int', default=9999,
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113 help='port [DEFAULT: %default]')
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114 parser.add_option('-H', '--host', dest='host', default='0.0.0.0',
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115 help='host [DEFAULT: %default]')
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116 options, args = parser.parse_args(args)
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117
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118 # get the directory
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119 if not len(args) == 1:
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120 parser.print_help()
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121 sys.exit(1)
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122 directory = args[0]
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123 if not os.path.exists(directory):
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124 parser.error("'%s' not found" % directory)
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125 if not os.path.isdir(directory):
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126 parser.error("'%s' not a directory" % directory)
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127
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128 # serve
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129 app = DirectoryServer(directory)
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130 try:
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131 print 'http://%s:%s/' % (options.host, options.port)
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132 make_server(options.host, options.port, app).serve_forever()
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133 except KeyboardInterrupt, ki:
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134 print "Cio, baby!"
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135 except BaseException, e:
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136 sys.exit("Problem initializing server: %s" % e)
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137
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138 if __name__ == '__main__':
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139 main()