Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/future/backports/xmlrpc/server.py @ 0:d30785e31577 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:18:57 -0400
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1 r"""
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2 Ported using Python-Future from the Python 3.3 standard library.
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3
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4 XML-RPC Servers.
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5
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6 This module can be used to create simple XML-RPC servers
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7 by creating a server and either installing functions, a
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8 class instance, or by extending the SimpleXMLRPCServer
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9 class.
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10
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11 It can also be used to handle XML-RPC requests in a CGI
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12 environment using CGIXMLRPCRequestHandler.
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13
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14 The Doc* classes can be used to create XML-RPC servers that
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15 serve pydoc-style documentation in response to HTTP
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16 GET requests. This documentation is dynamically generated
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17 based on the functions and methods registered with the
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18 server.
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19
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20 A list of possible usage patterns follows:
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21
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22 1. Install functions:
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23
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24 server = SimpleXMLRPCServer(("localhost", 8000))
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25 server.register_function(pow)
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26 server.register_function(lambda x,y: x+y, 'add')
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27 server.serve_forever()
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28
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29 2. Install an instance:
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30
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31 class MyFuncs:
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32 def __init__(self):
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33 # make all of the sys functions available through sys.func_name
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34 import sys
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35 self.sys = sys
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36 def _listMethods(self):
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37 # implement this method so that system.listMethods
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38 # knows to advertise the sys methods
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39 return list_public_methods(self) + \
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40 ['sys.' + method for method in list_public_methods(self.sys)]
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41 def pow(self, x, y): return pow(x, y)
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42 def add(self, x, y) : return x + y
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43
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44 server = SimpleXMLRPCServer(("localhost", 8000))
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45 server.register_introspection_functions()
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46 server.register_instance(MyFuncs())
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47 server.serve_forever()
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48
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49 3. Install an instance with custom dispatch method:
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50
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51 class Math:
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52 def _listMethods(self):
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53 # this method must be present for system.listMethods
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54 # to work
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55 return ['add', 'pow']
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56 def _methodHelp(self, method):
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57 # this method must be present for system.methodHelp
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58 # to work
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59 if method == 'add':
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60 return "add(2,3) => 5"
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61 elif method == 'pow':
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62 return "pow(x, y[, z]) => number"
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63 else:
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64 # By convention, return empty
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65 # string if no help is available
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66 return ""
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67 def _dispatch(self, method, params):
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68 if method == 'pow':
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69 return pow(*params)
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70 elif method == 'add':
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71 return params[0] + params[1]
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72 else:
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73 raise ValueError('bad method')
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74
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75 server = SimpleXMLRPCServer(("localhost", 8000))
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76 server.register_introspection_functions()
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77 server.register_instance(Math())
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78 server.serve_forever()
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79
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80 4. Subclass SimpleXMLRPCServer:
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81
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82 class MathServer(SimpleXMLRPCServer):
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83 def _dispatch(self, method, params):
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84 try:
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85 # We are forcing the 'export_' prefix on methods that are
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86 # callable through XML-RPC to prevent potential security
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87 # problems
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88 func = getattr(self, 'export_' + method)
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89 except AttributeError:
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90 raise Exception('method "%s" is not supported' % method)
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91 else:
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92 return func(*params)
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93
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94 def export_add(self, x, y):
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95 return x + y
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96
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97 server = MathServer(("localhost", 8000))
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98 server.serve_forever()
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99
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100 5. CGI script:
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101
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102 server = CGIXMLRPCRequestHandler()
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103 server.register_function(pow)
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104 server.handle_request()
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105 """
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106
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107 from __future__ import absolute_import, division, print_function, unicode_literals
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108 from future.builtins import int, str
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109
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110 # Written by Brian Quinlan (brian@sweetapp.com).
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111 # Based on code written by Fredrik Lundh.
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112
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113 from future.backports.xmlrpc.client import Fault, dumps, loads, gzip_encode, gzip_decode
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114 from future.backports.http.server import BaseHTTPRequestHandler
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115 import future.backports.http.server as http_server
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116 from future.backports import socketserver
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117 import sys
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118 import os
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119 import re
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120 import pydoc
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121 import inspect
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122 import traceback
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123 try:
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124 import fcntl
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125 except ImportError:
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126 fcntl = None
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127
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128 def resolve_dotted_attribute(obj, attr, allow_dotted_names=True):
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129 """resolve_dotted_attribute(a, 'b.c.d') => a.b.c.d
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130
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131 Resolves a dotted attribute name to an object. Raises
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132 an AttributeError if any attribute in the chain starts with a '_'.
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133
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134 If the optional allow_dotted_names argument is false, dots are not
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135 supported and this function operates similar to getattr(obj, attr).
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136 """
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137
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138 if allow_dotted_names:
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139 attrs = attr.split('.')
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140 else:
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141 attrs = [attr]
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142
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143 for i in attrs:
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144 if i.startswith('_'):
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145 raise AttributeError(
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146 'attempt to access private attribute "%s"' % i
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147 )
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148 else:
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149 obj = getattr(obj,i)
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150 return obj
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151
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152 def list_public_methods(obj):
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153 """Returns a list of attribute strings, found in the specified
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154 object, which represent callable attributes"""
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155
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156 return [member for member in dir(obj)
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157 if not member.startswith('_') and
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158 callable(getattr(obj, member))]
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159
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160 class SimpleXMLRPCDispatcher(object):
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161 """Mix-in class that dispatches XML-RPC requests.
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162
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163 This class is used to register XML-RPC method handlers
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164 and then to dispatch them. This class doesn't need to be
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165 instanced directly when used by SimpleXMLRPCServer but it
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166 can be instanced when used by the MultiPathXMLRPCServer
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167 """
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168
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169 def __init__(self, allow_none=False, encoding=None,
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170 use_builtin_types=False):
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171 self.funcs = {}
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172 self.instance = None
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173 self.allow_none = allow_none
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174 self.encoding = encoding or 'utf-8'
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175 self.use_builtin_types = use_builtin_types
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176
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177 def register_instance(self, instance, allow_dotted_names=False):
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178 """Registers an instance to respond to XML-RPC requests.
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179
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180 Only one instance can be installed at a time.
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181
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182 If the registered instance has a _dispatch method then that
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183 method will be called with the name of the XML-RPC method and
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184 its parameters as a tuple
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185 e.g. instance._dispatch('add',(2,3))
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186
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187 If the registered instance does not have a _dispatch method
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188 then the instance will be searched to find a matching method
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189 and, if found, will be called. Methods beginning with an '_'
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190 are considered private and will not be called by
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191 SimpleXMLRPCServer.
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192
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193 If a registered function matches a XML-RPC request, then it
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194 will be called instead of the registered instance.
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195
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196 If the optional allow_dotted_names argument is true and the
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197 instance does not have a _dispatch method, method names
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198 containing dots are supported and resolved, as long as none of
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199 the name segments start with an '_'.
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200
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201 *** SECURITY WARNING: ***
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202
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203 Enabling the allow_dotted_names options allows intruders
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204 to access your module's global variables and may allow
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205 intruders to execute arbitrary code on your machine. Only
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206 use this option on a secure, closed network.
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207
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208 """
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209
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210 self.instance = instance
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211 self.allow_dotted_names = allow_dotted_names
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212
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213 def register_function(self, function, name=None):
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214 """Registers a function to respond to XML-RPC requests.
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215
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216 The optional name argument can be used to set a Unicode name
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217 for the function.
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218 """
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219
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220 if name is None:
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221 name = function.__name__
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222 self.funcs[name] = function
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223
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224 def register_introspection_functions(self):
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225 """Registers the XML-RPC introspection methods in the system
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226 namespace.
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227
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228 see http://xmlrpc.usefulinc.com/doc/reserved.html
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229 """
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230
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231 self.funcs.update({'system.listMethods' : self.system_listMethods,
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232 'system.methodSignature' : self.system_methodSignature,
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233 'system.methodHelp' : self.system_methodHelp})
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234
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235 def register_multicall_functions(self):
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236 """Registers the XML-RPC multicall method in the system
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237 namespace.
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238
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239 see http://www.xmlrpc.com/discuss/msgReader$1208"""
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240
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241 self.funcs.update({'system.multicall' : self.system_multicall})
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242
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243 def _marshaled_dispatch(self, data, dispatch_method = None, path = None):
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244 """Dispatches an XML-RPC method from marshalled (XML) data.
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245
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246 XML-RPC methods are dispatched from the marshalled (XML) data
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247 using the _dispatch method and the result is returned as
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248 marshalled data. For backwards compatibility, a dispatch
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249 function can be provided as an argument (see comment in
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250 SimpleXMLRPCRequestHandler.do_POST) but overriding the
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251 existing method through subclassing is the preferred means
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252 of changing method dispatch behavior.
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253 """
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254
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255 try:
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256 params, method = loads(data, use_builtin_types=self.use_builtin_types)
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257
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258 # generate response
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259 if dispatch_method is not None:
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260 response = dispatch_method(method, params)
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261 else:
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262 response = self._dispatch(method, params)
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263 # wrap response in a singleton tuple
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264 response = (response,)
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265 response = dumps(response, methodresponse=1,
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266 allow_none=self.allow_none, encoding=self.encoding)
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267 except Fault as fault:
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268 response = dumps(fault, allow_none=self.allow_none,
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269 encoding=self.encoding)
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270 except:
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271 # report exception back to server
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272 exc_type, exc_value, exc_tb = sys.exc_info()
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273 response = dumps(
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274 Fault(1, "%s:%s" % (exc_type, exc_value)),
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275 encoding=self.encoding, allow_none=self.allow_none,
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276 )
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277
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278 return response.encode(self.encoding)
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279
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280 def system_listMethods(self):
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281 """system.listMethods() => ['add', 'subtract', 'multiple']
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282
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283 Returns a list of the methods supported by the server."""
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284
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285 methods = set(self.funcs.keys())
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286 if self.instance is not None:
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287 # Instance can implement _listMethod to return a list of
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288 # methods
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289 if hasattr(self.instance, '_listMethods'):
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290 methods |= set(self.instance._listMethods())
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291 # if the instance has a _dispatch method then we
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292 # don't have enough information to provide a list
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293 # of methods
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294 elif not hasattr(self.instance, '_dispatch'):
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295 methods |= set(list_public_methods(self.instance))
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296 return sorted(methods)
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297
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298 def system_methodSignature(self, method_name):
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299 """system.methodSignature('add') => [double, int, int]
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300
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301 Returns a list describing the signature of the method. In the
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302 above example, the add method takes two integers as arguments
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303 and returns a double result.
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304
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305 This server does NOT support system.methodSignature."""
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306
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307 # See http://xmlrpc.usefulinc.com/doc/sysmethodsig.html
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308
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309 return 'signatures not supported'
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310
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311 def system_methodHelp(self, method_name):
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312 """system.methodHelp('add') => "Adds two integers together"
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313
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314 Returns a string containing documentation for the specified method."""
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315
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316 method = None
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317 if method_name in self.funcs:
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318 method = self.funcs[method_name]
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319 elif self.instance is not None:
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320 # Instance can implement _methodHelp to return help for a method
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321 if hasattr(self.instance, '_methodHelp'):
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322 return self.instance._methodHelp(method_name)
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323 # if the instance has a _dispatch method then we
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324 # don't have enough information to provide help
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325 elif not hasattr(self.instance, '_dispatch'):
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326 try:
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327 method = resolve_dotted_attribute(
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328 self.instance,
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329 method_name,
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330 self.allow_dotted_names
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331 )
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332 except AttributeError:
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333 pass
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334
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335 # Note that we aren't checking that the method actually
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336 # be a callable object of some kind
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337 if method is None:
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338 return ""
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339 else:
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340 return pydoc.getdoc(method)
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341
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342 def system_multicall(self, call_list):
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343 """system.multicall([{'methodName': 'add', 'params': [2, 2]}, ...]) => \
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344 [[4], ...]
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345
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346 Allows the caller to package multiple XML-RPC calls into a single
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347 request.
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348
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349 See http://www.xmlrpc.com/discuss/msgReader$1208
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350 """
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351
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352 results = []
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353 for call in call_list:
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354 method_name = call['methodName']
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355 params = call['params']
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356
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357 try:
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358 # XXX A marshalling error in any response will fail the entire
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359 # multicall. If someone cares they should fix this.
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360 results.append([self._dispatch(method_name, params)])
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361 except Fault as fault:
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362 results.append(
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363 {'faultCode' : fault.faultCode,
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364 'faultString' : fault.faultString}
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365 )
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366 except:
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367 exc_type, exc_value, exc_tb = sys.exc_info()
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368 results.append(
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369 {'faultCode' : 1,
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370 'faultString' : "%s:%s" % (exc_type, exc_value)}
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371 )
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372 return results
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373
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374 def _dispatch(self, method, params):
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375 """Dispatches the XML-RPC method.
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376
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377 XML-RPC calls are forwarded to a registered function that
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378 matches the called XML-RPC method name. If no such function
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379 exists then the call is forwarded to the registered instance,
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380 if available.
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381
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382 If the registered instance has a _dispatch method then that
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383 method will be called with the name of the XML-RPC method and
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384 its parameters as a tuple
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385 e.g. instance._dispatch('add',(2,3))
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386
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387 If the registered instance does not have a _dispatch method
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388 then the instance will be searched to find a matching method
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389 and, if found, will be called.
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390
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391 Methods beginning with an '_' are considered private and will
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392 not be called.
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393 """
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394
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395 func = None
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396 try:
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397 # check to see if a matching function has been registered
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diff changeset
398 func = self.funcs[method]
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diff changeset
399 except KeyError:
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diff changeset
400 if self.instance is not None:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
401 # check for a _dispatch method
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diff changeset
402 if hasattr(self.instance, '_dispatch'):
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diff changeset
403 return self.instance._dispatch(method, params)
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diff changeset
404 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
405 # call instance method directly
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
406 try:
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407 func = resolve_dotted_attribute(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
408 self.instance,
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diff changeset
409 method,
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diff changeset
410 self.allow_dotted_names
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411 )
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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412 except AttributeError:
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diff changeset
413 pass
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diff changeset
414
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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415 if func is not None:
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416 return func(*params)
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417 else:
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418 raise Exception('method "%s" is not supported' % method)
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419
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420 class SimpleXMLRPCRequestHandler(BaseHTTPRequestHandler):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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421 """Simple XML-RPC request handler class.
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422
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423 Handles all HTTP POST requests and attempts to decode them as
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424 XML-RPC requests.
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425 """
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426
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427 # Class attribute listing the accessible path components;
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428 # paths not on this list will result in a 404 error.
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429 rpc_paths = ('/', '/RPC2')
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430
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431 #if not None, encode responses larger than this, if possible
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432 encode_threshold = 1400 #a common MTU
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433
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diff changeset
434 #Override form StreamRequestHandler: full buffering of output
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diff changeset
435 #and no Nagle.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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436 wbufsize = -1
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437 disable_nagle_algorithm = True
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438
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
439 # a re to match a gzip Accept-Encoding
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440 aepattern = re.compile(r"""
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441 \s* ([^\s;]+) \s* #content-coding
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442 (;\s* q \s*=\s* ([0-9\.]+))? #q
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443 """, re.VERBOSE | re.IGNORECASE)
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diff changeset
444
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445 def accept_encodings(self):
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446 r = {}
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447 ae = self.headers.get("Accept-Encoding", "")
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448 for e in ae.split(","):
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449 match = self.aepattern.match(e)
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450 if match:
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451 v = match.group(3)
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452 v = float(v) if v else 1.0
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diff changeset
453 r[match.group(1)] = v
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454 return r
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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455
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diff changeset
456 def is_rpc_path_valid(self):
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diff changeset
457 if self.rpc_paths:
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diff changeset
458 return self.path in self.rpc_paths
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diff changeset
459 else:
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460 # If .rpc_paths is empty, just assume all paths are legal
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461 return True
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diff changeset
462
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463 def do_POST(self):
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diff changeset
464 """Handles the HTTP POST request.
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465
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466 Attempts to interpret all HTTP POST requests as XML-RPC calls,
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467 which are forwarded to the server's _dispatch method for handling.
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468 """
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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469
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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470 # Check that the path is legal
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471 if not self.is_rpc_path_valid():
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472 self.report_404()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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473 return
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474
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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475 try:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
476 # Get arguments by reading body of request.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
477 # We read this in chunks to avoid straining
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
478 # socket.read(); around the 10 or 15Mb mark, some platforms
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
479 # begin to have problems (bug #792570).
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480 max_chunk_size = 10*1024*1024
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481 size_remaining = int(self.headers["content-length"])
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482 L = []
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
483 while size_remaining:
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diff changeset
484 chunk_size = min(size_remaining, max_chunk_size)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
485 chunk = self.rfile.read(chunk_size)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
486 if not chunk:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
487 break
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diff changeset
488 L.append(chunk)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
489 size_remaining -= len(L[-1])
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diff changeset
490 data = b''.join(L)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
491
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
492 data = self.decode_request_content(data)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
493 if data is None:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
494 return #response has been sent
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diff changeset
495
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diff changeset
496 # In previous versions of SimpleXMLRPCServer, _dispatch
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
497 # could be overridden in this class, instead of in
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
498 # SimpleXMLRPCDispatcher. To maintain backwards compatibility,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
499 # check to see if a subclass implements _dispatch and dispatch
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
500 # using that method if present.
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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501 response = self.server._marshaled_dispatch(
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502 data, getattr(self, '_dispatch', None), self.path
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diff changeset
503 )
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
504 except Exception as e: # This should only happen if the module is buggy
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diff changeset
505 # internal error, report as HTTP server error
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diff changeset
506 self.send_response(500)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
507
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
508 # Send information about the exception if requested
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
509 if hasattr(self.server, '_send_traceback_header') and \
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
510 self.server._send_traceback_header:
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diff changeset
511 self.send_header("X-exception", str(e))
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512 trace = traceback.format_exc()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
513 trace = str(trace.encode('ASCII', 'backslashreplace'), 'ASCII')
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diff changeset
514 self.send_header("X-traceback", trace)
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guerler
parents:
diff changeset
515
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diff changeset
516 self.send_header("Content-length", "0")
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diff changeset
517 self.end_headers()
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
518 else:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
519 self.send_response(200)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
520 self.send_header("Content-type", "text/xml")
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parents:
diff changeset
521 if self.encode_threshold is not None:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
522 if len(response) > self.encode_threshold:
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diff changeset
523 q = self.accept_encodings().get("gzip", 0)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
524 if q:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
525 try:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
526 response = gzip_encode(response)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
527 self.send_header("Content-Encoding", "gzip")
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
528 except NotImplementedError:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
529 pass
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parents:
diff changeset
530 self.send_header("Content-length", str(len(response)))
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parents:
diff changeset
531 self.end_headers()
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diff changeset
532 self.wfile.write(response)
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diff changeset
533
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diff changeset
534 def decode_request_content(self, data):
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diff changeset
535 #support gzip encoding of request
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diff changeset
536 encoding = self.headers.get("content-encoding", "identity").lower()
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diff changeset
537 if encoding == "identity":
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diff changeset
538 return data
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diff changeset
539 if encoding == "gzip":
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diff changeset
540 try:
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541 return gzip_decode(data)
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542 except NotImplementedError:
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543 self.send_response(501, "encoding %r not supported" % encoding)
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544 except ValueError:
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545 self.send_response(400, "error decoding gzip content")
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546 else:
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547 self.send_response(501, "encoding %r not supported" % encoding)
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548 self.send_header("Content-length", "0")
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549 self.end_headers()
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550
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551 def report_404 (self):
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diff changeset
552 # Report a 404 error
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553 self.send_response(404)
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554 response = b'No such page'
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555 self.send_header("Content-type", "text/plain")
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556 self.send_header("Content-length", str(len(response)))
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557 self.end_headers()
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558 self.wfile.write(response)
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559
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560 def log_request(self, code='-', size='-'):
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diff changeset
561 """Selectively log an accepted request."""
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562
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563 if self.server.logRequests:
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diff changeset
564 BaseHTTPRequestHandler.log_request(self, code, size)
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565
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566 class SimpleXMLRPCServer(socketserver.TCPServer,
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567 SimpleXMLRPCDispatcher):
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diff changeset
568 """Simple XML-RPC server.
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569
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diff changeset
570 Simple XML-RPC server that allows functions and a single instance
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571 to be installed to handle requests. The default implementation
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572 attempts to dispatch XML-RPC calls to the functions or instance
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573 installed in the server. Override the _dispatch method inherited
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574 from SimpleXMLRPCDispatcher to change this behavior.
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575 """
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576
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577 allow_reuse_address = True
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578
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579 # Warning: this is for debugging purposes only! Never set this to True in
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diff changeset
580 # production code, as will be sending out sensitive information (exception
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diff changeset
581 # and stack trace details) when exceptions are raised inside
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diff changeset
582 # SimpleXMLRPCRequestHandler.do_POST
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583 _send_traceback_header = False
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584
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585 def __init__(self, addr, requestHandler=SimpleXMLRPCRequestHandler,
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586 logRequests=True, allow_none=False, encoding=None,
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587 bind_and_activate=True, use_builtin_types=False):
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588 self.logRequests = logRequests
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589
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590 SimpleXMLRPCDispatcher.__init__(self, allow_none, encoding, use_builtin_types)
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591 socketserver.TCPServer.__init__(self, addr, requestHandler, bind_and_activate)
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592
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593 # [Bug #1222790] If possible, set close-on-exec flag; if a
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diff changeset
594 # method spawns a subprocess, the subprocess shouldn't have
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diff changeset
595 # the listening socket open.
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596 if fcntl is not None and hasattr(fcntl, 'FD_CLOEXEC'):
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597 flags = fcntl.fcntl(self.fileno(), fcntl.F_GETFD)
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598 flags |= fcntl.FD_CLOEXEC
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diff changeset
599 fcntl.fcntl(self.fileno(), fcntl.F_SETFD, flags)
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diff changeset
600
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601 class MultiPathXMLRPCServer(SimpleXMLRPCServer):
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diff changeset
602 """Multipath XML-RPC Server
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diff changeset
603 This specialization of SimpleXMLRPCServer allows the user to create
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diff changeset
604 multiple Dispatcher instances and assign them to different
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diff changeset
605 HTTP request paths. This makes it possible to run two or more
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diff changeset
606 'virtual XML-RPC servers' at the same port.
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diff changeset
607 Make sure that the requestHandler accepts the paths in question.
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diff changeset
608 """
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609 def __init__(self, addr, requestHandler=SimpleXMLRPCRequestHandler,
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610 logRequests=True, allow_none=False, encoding=None,
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611 bind_and_activate=True, use_builtin_types=False):
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diff changeset
612
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diff changeset
613 SimpleXMLRPCServer.__init__(self, addr, requestHandler, logRequests, allow_none,
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diff changeset
614 encoding, bind_and_activate, use_builtin_types)
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615 self.dispatchers = {}
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616 self.allow_none = allow_none
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617 self.encoding = encoding or 'utf-8'
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diff changeset
618
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619 def add_dispatcher(self, path, dispatcher):
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620 self.dispatchers[path] = dispatcher
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621 return dispatcher
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622
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623 def get_dispatcher(self, path):
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diff changeset
624 return self.dispatchers[path]
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625
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626 def _marshaled_dispatch(self, data, dispatch_method = None, path = None):
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diff changeset
627 try:
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628 response = self.dispatchers[path]._marshaled_dispatch(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
629 data, dispatch_method, path)
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diff changeset
630 except:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
631 # report low level exception back to server
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diff changeset
632 # (each dispatcher should have handled their own
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
633 # exceptions)
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diff changeset
634 exc_type, exc_value = sys.exc_info()[:2]
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635 response = dumps(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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636 Fault(1, "%s:%s" % (exc_type, exc_value)),
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diff changeset
637 encoding=self.encoding, allow_none=self.allow_none)
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638 response = response.encode(self.encoding)
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639 return response
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diff changeset
640
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641 class CGIXMLRPCRequestHandler(SimpleXMLRPCDispatcher):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
642 """Simple handler for XML-RPC data passed through CGI."""
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diff changeset
643
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diff changeset
644 def __init__(self, allow_none=False, encoding=None, use_builtin_types=False):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
645 SimpleXMLRPCDispatcher.__init__(self, allow_none, encoding, use_builtin_types)
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diff changeset
646
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647 def handle_xmlrpc(self, request_text):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
648 """Handle a single XML-RPC request"""
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diff changeset
649
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650 response = self._marshaled_dispatch(request_text)
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diff changeset
651
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652 print('Content-Type: text/xml')
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
653 print('Content-Length: %d' % len(response))
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diff changeset
654 print()
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655 sys.stdout.flush()
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656 sys.stdout.buffer.write(response)
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diff changeset
657 sys.stdout.buffer.flush()
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diff changeset
658
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659 def handle_get(self):
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diff changeset
660 """Handle a single HTTP GET request.
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661
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662 Default implementation indicates an error because
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663 XML-RPC uses the POST method.
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664 """
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665
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666 code = 400
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diff changeset
667 message, explain = BaseHTTPRequestHandler.responses[code]
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diff changeset
668
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diff changeset
669 response = http_server.DEFAULT_ERROR_MESSAGE % \
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diff changeset
670 {
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
671 'code' : code,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
672 'message' : message,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
673 'explain' : explain
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diff changeset
674 }
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diff changeset
675 response = response.encode('utf-8')
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diff changeset
676 print('Status: %d %s' % (code, message))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
677 print('Content-Type: %s' % http_server.DEFAULT_ERROR_CONTENT_TYPE)
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diff changeset
678 print('Content-Length: %d' % len(response))
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diff changeset
679 print()
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diff changeset
680 sys.stdout.flush()
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diff changeset
681 sys.stdout.buffer.write(response)
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parents:
diff changeset
682 sys.stdout.buffer.flush()
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diff changeset
683
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diff changeset
684 def handle_request(self, request_text=None):
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parents:
diff changeset
685 """Handle a single XML-RPC request passed through a CGI post method.
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diff changeset
686
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687 If no XML data is given then it is read from stdin. The resulting
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diff changeset
688 XML-RPC response is printed to stdout along with the correct HTTP
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diff changeset
689 headers.
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690 """
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691
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692 if request_text is None and \
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diff changeset
693 os.environ.get('REQUEST_METHOD', None) == 'GET':
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diff changeset
694 self.handle_get()
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diff changeset
695 else:
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diff changeset
696 # POST data is normally available through stdin
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
697 try:
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diff changeset
698 length = int(os.environ.get('CONTENT_LENGTH', None))
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parents:
diff changeset
699 except (ValueError, TypeError):
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diff changeset
700 length = -1
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
701 if request_text is None:
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parents:
diff changeset
702 request_text = sys.stdin.read(length)
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diff changeset
703
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diff changeset
704 self.handle_xmlrpc(request_text)
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diff changeset
705
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diff changeset
706
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diff changeset
707 # -----------------------------------------------------------------------------
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parents:
diff changeset
708 # Self documenting XML-RPC Server.
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diff changeset
709
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710 class ServerHTMLDoc(pydoc.HTMLDoc):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
711 """Class used to generate pydoc HTML document for a server"""
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parents:
diff changeset
712
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diff changeset
713 def markup(self, text, escape=None, funcs={}, classes={}, methods={}):
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diff changeset
714 """Mark up some plain text, given a context of symbols to look for.
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diff changeset
715 Each context dictionary maps object names to anchor names."""
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diff changeset
716 escape = escape or self.escape
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diff changeset
717 results = []
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diff changeset
718 here = 0
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diff changeset
719
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diff changeset
720 # XXX Note that this regular expression does not allow for the
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
721 # hyperlinking of arbitrary strings being used as method
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diff changeset
722 # names. Only methods with names consisting of word characters
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parents:
diff changeset
723 # and '.'s are hyperlinked.
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diff changeset
724 pattern = re.compile(r'\b((http|ftp)://\S+[\w/]|'
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
725 r'RFC[- ]?(\d+)|'
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parents:
diff changeset
726 r'PEP[- ]?(\d+)|'
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diff changeset
727 r'(self\.)?((?:\w|\.)+))\b')
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diff changeset
728 while 1:
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diff changeset
729 match = pattern.search(text, here)
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730 if not match: break
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731 start, end = match.span()
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diff changeset
732 results.append(escape(text[here:start]))
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diff changeset
733
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734 all, scheme, rfc, pep, selfdot, name = match.groups()
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diff changeset
735 if scheme:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
736 url = escape(all).replace('"', '"')
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diff changeset
737 results.append('<a href="%s">%s</a>' % (url, url))
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diff changeset
738 elif rfc:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
739 url = 'http://www.rfc-editor.org/rfc/rfc%d.txt' % int(rfc)
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diff changeset
740 results.append('<a href="%s">%s</a>' % (url, escape(all)))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
741 elif pep:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
742 url = 'http://www.python.org/dev/peps/pep-%04d/' % int(pep)
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diff changeset
743 results.append('<a href="%s">%s</a>' % (url, escape(all)))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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744 elif text[end:end+1] == '(':
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diff changeset
745 results.append(self.namelink(name, methods, funcs, classes))
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
746 elif selfdot:
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
747 results.append('self.<strong>%s</strong>' % name)
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diff changeset
748 else:
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diff changeset
749 results.append(self.namelink(name, classes))
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diff changeset
750 here = end
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
751 results.append(escape(text[here:]))
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diff changeset
752 return ''.join(results)
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diff changeset
753
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diff changeset
754 def docroutine(self, object, name, mod=None,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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755 funcs={}, classes={}, methods={}, cl=None):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
756 """Produce HTML documentation for a function or method object."""
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
757
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diff changeset
758 anchor = (cl and cl.__name__ or '') + '-' + name
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
759 note = ''
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diff changeset
760
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
761 title = '<a name="%s"><strong>%s</strong></a>' % (
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
762 self.escape(anchor), self.escape(name))
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diff changeset
763
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diff changeset
764 if inspect.ismethod(object):
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diff changeset
765 args = inspect.getfullargspec(object)
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diff changeset
766 # exclude the argument bound to the instance, it will be
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
767 # confusing to the non-Python user
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diff changeset
768 argspec = inspect.formatargspec (
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diff changeset
769 args.args[1:],
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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770 args.varargs,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
771 args.varkw,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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772 args.defaults,
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773 annotations=args.annotations,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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774 formatvalue=self.formatvalue
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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775 )
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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776 elif inspect.isfunction(object):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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777 args = inspect.getfullargspec(object)
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diff changeset
778 argspec = inspect.formatargspec(
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
779 args.args, args.varargs, args.varkw, args.defaults,
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diff changeset
780 annotations=args.annotations,
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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781 formatvalue=self.formatvalue)
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
782 else:
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diff changeset
783 argspec = '(...)'
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784
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785 if isinstance(object, tuple):
d30785e31577 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
786 argspec = object[0] or argspec
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diff changeset
787 docstring = object[1] or ""
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diff changeset
788 else:
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diff changeset
789 docstring = pydoc.getdoc(object)
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diff changeset
790
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diff changeset
791 decl = title + argspec + (note and self.grey(
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parents:
diff changeset
792 '<font face="helvetica, arial">%s</font>' % note))
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parents:
diff changeset
793
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parents:
diff changeset
794 doc = self.markup(
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parents:
diff changeset
795 docstring, self.preformat, funcs, classes, methods)
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parents:
diff changeset
796 doc = doc and '<dd><tt>%s</tt></dd>' % doc
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parents:
diff changeset
797 return '<dl><dt>%s</dt>%s</dl>\n' % (decl, doc)
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diff changeset
798
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diff changeset
799 def docserver(self, server_name, package_documentation, methods):
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parents:
diff changeset
800 """Produce HTML documentation for an XML-RPC server."""
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diff changeset
801
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diff changeset
802 fdict = {}
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parents:
diff changeset
803 for key, value in methods.items():
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diff changeset
804 fdict[key] = '#-' + key
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parents:
diff changeset
805 fdict[value] = fdict[key]
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parents:
diff changeset
806
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diff changeset
807 server_name = self.escape(server_name)
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parents:
diff changeset
808 head = '<big><big><strong>%s</strong></big></big>' % server_name
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parents:
diff changeset
809 result = self.heading(head, '#ffffff', '#7799ee')
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parents:
diff changeset
810
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parents:
diff changeset
811 doc = self.markup(package_documentation, self.preformat, fdict)
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diff changeset
812 doc = doc and '<tt>%s</tt>' % doc
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parents:
diff changeset
813 result = result + '<p>%s</p>\n' % doc
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parents:
diff changeset
814
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parents:
diff changeset
815 contents = []
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parents:
diff changeset
816 method_items = sorted(methods.items())
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diff changeset
817 for key, value in method_items:
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diff changeset
818 contents.append(self.docroutine(value, key, funcs=fdict))
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parents:
diff changeset
819 result = result + self.bigsection(
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parents:
diff changeset
820 'Methods', '#ffffff', '#eeaa77', ''.join(contents))
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parents:
diff changeset
821
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822 return result
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diff changeset
823
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824 class XMLRPCDocGenerator(object):
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diff changeset
825 """Generates documentation for an XML-RPC server.
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diff changeset
826
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diff changeset
827 This class is designed as mix-in and should not
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diff changeset
828 be constructed directly.
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diff changeset
829 """
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diff changeset
830
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diff changeset
831 def __init__(self):
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parents:
diff changeset
832 # setup variables used for HTML documentation
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diff changeset
833 self.server_name = 'XML-RPC Server Documentation'
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parents:
diff changeset
834 self.server_documentation = \
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diff changeset
835 "This server exports the following methods through the XML-RPC "\
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parents:
diff changeset
836 "protocol."
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diff changeset
837 self.server_title = 'XML-RPC Server Documentation'
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diff changeset
838
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diff changeset
839 def set_server_title(self, server_title):
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diff changeset
840 """Set the HTML title of the generated server documentation"""
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diff changeset
841
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diff changeset
842 self.server_title = server_title
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diff changeset
843
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diff changeset
844 def set_server_name(self, server_name):
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diff changeset
845 """Set the name of the generated HTML server documentation"""
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diff changeset
846
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diff changeset
847 self.server_name = server_name
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diff changeset
848
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diff changeset
849 def set_server_documentation(self, server_documentation):
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diff changeset
850 """Set the documentation string for the entire server."""
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diff changeset
851
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diff changeset
852 self.server_documentation = server_documentation
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diff changeset
853
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diff changeset
854 def generate_html_documentation(self):
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diff changeset
855 """generate_html_documentation() => html documentation for the server
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diff changeset
856
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diff changeset
857 Generates HTML documentation for the server using introspection for
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parents:
diff changeset
858 installed functions and instances that do not implement the
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diff changeset
859 _dispatch method. Alternatively, instances can choose to implement
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diff changeset
860 the _get_method_argstring(method_name) method to provide the
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diff changeset
861 argument string used in the documentation and the
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diff changeset
862 _methodHelp(method_name) method to provide the help text used
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diff changeset
863 in the documentation."""
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diff changeset
864
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diff changeset
865 methods = {}
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diff changeset
866
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diff changeset
867 for method_name in self.system_listMethods():
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diff changeset
868 if method_name in self.funcs:
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diff changeset
869 method = self.funcs[method_name]
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diff changeset
870 elif self.instance is not None:
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diff changeset
871 method_info = [None, None] # argspec, documentation
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diff changeset
872 if hasattr(self.instance, '_get_method_argstring'):
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diff changeset
873 method_info[0] = self.instance._get_method_argstring(method_name)
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diff changeset
874 if hasattr(self.instance, '_methodHelp'):
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parents:
diff changeset
875 method_info[1] = self.instance._methodHelp(method_name)
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diff changeset
876
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diff changeset
877 method_info = tuple(method_info)
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diff changeset
878 if method_info != (None, None):
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diff changeset
879 method = method_info
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diff changeset
880 elif not hasattr(self.instance, '_dispatch'):
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diff changeset
881 try:
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diff changeset
882 method = resolve_dotted_attribute(
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diff changeset
883 self.instance,
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diff changeset
884 method_name
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diff changeset
885 )
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diff changeset
886 except AttributeError:
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diff changeset
887 method = method_info
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diff changeset
888 else:
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diff changeset
889 method = method_info
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diff changeset
890 else:
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diff changeset
891 assert 0, "Could not find method in self.functions and no "\
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diff changeset
892 "instance installed"
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diff changeset
893
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diff changeset
894 methods[method_name] = method
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diff changeset
895
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diff changeset
896 documenter = ServerHTMLDoc()
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diff changeset
897 documentation = documenter.docserver(
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diff changeset
898 self.server_name,
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diff changeset
899 self.server_documentation,
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diff changeset
900 methods
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diff changeset
901 )
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diff changeset
902
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diff changeset
903 return documenter.page(self.server_title, documentation)
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parents:
diff changeset
904
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diff changeset
905 class DocXMLRPCRequestHandler(SimpleXMLRPCRequestHandler):
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parents:
diff changeset
906 """XML-RPC and documentation request handler class.
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diff changeset
907
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908 Handles all HTTP POST requests and attempts to decode them as
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diff changeset
909 XML-RPC requests.
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diff changeset
910
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911 Handles all HTTP GET requests and interprets them as requests
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diff changeset
912 for documentation.
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diff changeset
913 """
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diff changeset
914
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915 def do_GET(self):
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916 """Handles the HTTP GET request.
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diff changeset
917
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918 Interpret all HTTP GET requests as requests for server
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919 documentation.
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920 """
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921 # Check that the path is legal
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922 if not self.is_rpc_path_valid():
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923 self.report_404()
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924 return
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925
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926 response = self.server.generate_html_documentation().encode('utf-8')
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927 self.send_response(200)
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928 self.send_header("Content-type", "text/html")
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929 self.send_header("Content-length", str(len(response)))
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930 self.end_headers()
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931 self.wfile.write(response)
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932
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933 class DocXMLRPCServer( SimpleXMLRPCServer,
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934 XMLRPCDocGenerator):
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935 """XML-RPC and HTML documentation server.
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936
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937 Adds the ability to serve server documentation to the capabilities
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938 of SimpleXMLRPCServer.
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939 """
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940
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941 def __init__(self, addr, requestHandler=DocXMLRPCRequestHandler,
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942 logRequests=True, allow_none=False, encoding=None,
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943 bind_and_activate=True, use_builtin_types=False):
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944 SimpleXMLRPCServer.__init__(self, addr, requestHandler, logRequests,
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945 allow_none, encoding, bind_and_activate,
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946 use_builtin_types)
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947 XMLRPCDocGenerator.__init__(self)
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948
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949 class DocCGIXMLRPCRequestHandler( CGIXMLRPCRequestHandler,
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950 XMLRPCDocGenerator):
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951 """Handler for XML-RPC data and documentation requests passed through
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952 CGI"""
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953
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954 def handle_get(self):
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955 """Handles the HTTP GET request.
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956
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957 Interpret all HTTP GET requests as requests for server
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958 documentation.
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959 """
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960
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961 response = self.generate_html_documentation().encode('utf-8')
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962
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963 print('Content-Type: text/html')
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964 print('Content-Length: %d' % len(response))
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965 print()
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966 sys.stdout.flush()
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967 sys.stdout.buffer.write(response)
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968 sys.stdout.buffer.flush()
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969
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970 def __init__(self):
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971 CGIXMLRPCRequestHandler.__init__(self)
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972 XMLRPCDocGenerator.__init__(self)
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973
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974
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975 if __name__ == '__main__':
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976 import datetime
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977
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978 class ExampleService:
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979 def getData(self):
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980 return '42'
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981
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982 class currentTime:
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983 @staticmethod
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984 def getCurrentTime():
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985 return datetime.datetime.now()
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986
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987 server = SimpleXMLRPCServer(("localhost", 8000))
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988 server.register_function(pow)
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989 server.register_function(lambda x,y: x+y, 'add')
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990 server.register_instance(ExampleService(), allow_dotted_names=True)
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991 server.register_multicall_functions()
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992 print('Serving XML-RPC on localhost port 8000')
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993 print('It is advisable to run this example server within a secure, closed network.')
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994 try:
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995 server.serve_forever()
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996 except KeyboardInterrupt:
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997 print("\nKeyboard interrupt received, exiting.")
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998 server.server_close()
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999 sys.exit(0)