Mercurial > traipse_dev

annotate plugins/cherrypy/_cpdefaults.py @ 39:93a27aea09ce traipse_dev

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Going to post some daily builds as advancements happen. Repo List now updates.
author sirebral
date Wed, 05 Aug 2009 08:16:32 -0500
parents 4385a7d0efd1
children
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0
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1 """
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2 Copyright (c) 2004, CherryPy Team (team@cherrypy.org)
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3 All rights reserved.
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4
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5 Redistribution and use in source and binary forms, with or without modification,
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6 are permitted provided that the following conditions are met:
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7
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8 * Redistributions of source code must retain the above copyright notice,
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9 this list of conditions and the following disclaimer.
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10 * Redistributions in binary form must reproduce the above copyright notice,
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11 this list of conditions and the following disclaimer in the documentation
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12 and/or other materials provided with the distribution.
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13 * Neither the name of the CherryPy Team nor the names of its contributors
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14 may be used to endorse or promote products derived from this software
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15 without specific prior written permission.
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16
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17 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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18 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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19 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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20 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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21 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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23 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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24 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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25 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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26 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 """
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28
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29
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30 """
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31 A module containing a few utility classes/functions used by CherryPy
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32 """
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33
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34 import time, thread, os, cpg
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35 import cPickle as pickle
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36
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37 def _cpLogMessage(msg, context = '', severity = 0):
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38 """ Default method for logging messages """
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39
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40 nowTuple = time.localtime(time.time())
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41 nowStr = '%04d/%02d/%02d %02d:%02d:%02d' % (nowTuple[:6])
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42 if severity == 0:
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43 level = "INFO"
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44 elif severity == 1:
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45 level = "WARNING"
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46 elif severity == 2:
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47 level = "ERROR"
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48 else:
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49 lebel = "UNKNOWN"
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50 try:
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51 logToScreen = int(cpg.configOption.logToScreen)
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52 except:
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53 logToScreen = True
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54 s = nowStr + ' ' + context + ' ' + level + ' ' + msg
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55 if logToScreen:
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56 print s
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57 if cpg.configOption.logFile:
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58 f = open(cpg.configOption.logFile, 'ab')
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59 f.write(s + '\n')
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60 f.close()
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61
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62 def _cpOnError():
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63 """ Default _cpOnError method """
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64
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65 import traceback, StringIO
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66 bodyFile = StringIO.StringIO()
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67 traceback.print_exc(file = bodyFile)
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68 cpg.response.body = [bodyFile.getvalue()]
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69 cpg.response.headerMap['Content-Type'] = 'text/plain'
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70
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71 def _cpSaveSessionData(sessionId, sessionData, expirationTime,
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72 threadPool = None, sessionStorageType = None,
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73 sessionStorageFileDir = None):
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74 """ Save session data if needed """
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75
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76 if threadPool is None:
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77 threadPool = cpg.configOption.threadPool
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78 if sessionStorageType is None:
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79 sessionStorageType = cpg.configOption.sessionStorageType
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80 if sessionStorageFileDir is None:
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81 sessionStorageFileDir = cpg.configOption.sessionStorageFileDir
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82
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83 t = time.localtime(expirationTime)
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84 if sessionStorageType == 'file':
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85 fname=os.path.join(sessionStorageFileDir,sessionId)
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86 if threadPool > 1:
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87 cpg._sessionFileLock.acquire()
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88 f = open(fname,"wb")
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89 pickle.dump((sessionData, expirationTime), f)
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90 f.close()
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91 if threadPool > 1:
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92 cpg._sessionFileLock.release()
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93
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94 elif sessionStorageType=="ram":
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95 # Update expiration time
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96 cpg._sessionMap[sessionId] = (sessionData, expirationTime)
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97
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98 """ TODO: implement cookie storage type
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99 elif sessionStorageType == "cookie":
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100
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101 TODO: set siteKey in _cpConfig
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102 # Get site key from config file or compute it
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103 try: cpg._SITE_KEY_ = configFile.get('server','siteKey')
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104 except:
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105 _SITE_KEY_ = ''
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106 for i in range(30):
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107 _SITE_KEY_ += random.choice(string.letters)
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108
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109 # Update expiration time
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110 sessionData = (sessionData, expirationTime)
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111 dumpStr = pickle.dumps(_sessionData)
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112 try: dumpStr = zlib.compress(dumpStr)
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113 except: pass # zlib is not available in all python distros
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114 dumpStr = binascii.hexlify(dumpStr) # Need to hexlify it because it will be stored in a cookie
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115 cpg.response.simpleCookie['CSession'] = dumpStr
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116 cpg.response.simpleCookie['CSession-sig'] = md5.md5(dumpStr + cpg.configOption.siteKey).hexdigest()
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117 cpg.response.simpleCookie['CSession']['path'] = '/'
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118 cpg.response.simpleCookie['CSession']['max-age'] = sessionTimeout * 60
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119 cpg.response.simpleCookie['CSession-sig']['path'] = '/'
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120 cpg.response.simpleCookie['CSession-sig']['max-age'] = sessionTimeout * 60
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121 """
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122
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123 def _cpLoadSessionData(sessionId, threadPool = None, sessionStorageType = None,
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124 sessionStorageFileDir = None):
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125 """ Return the session data for a given sessionId.
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126 The _expirationTime will be checked by the caller of this function
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127 """
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128
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129 if threadPool is None:
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130 threadPool = cpg.configOption.threadPool
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131 if sessionStorageType is None:
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132 sessionStorageType = cpg.configOption.sessionStorageType
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133 if sessionStorageFileDir is None:
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134 sessionStorageFileDir = cpg.configOption.sessionStorageFileDir
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135
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136 if sessionStorageType == "ram":
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137 if cpg._sessionMap.has_key(sessionId):
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138 return cpg._sessionMap[sessionId]
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139 else: return None
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140
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141 elif sessionStorageType == "file":
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142 fname = os.path.join(sessionStorageFileDir, sessionId)
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143 if os.path.exists(fname):
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144 if threadPool > 1:
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145 cpg._sessionFileLock.acquire()
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146 f = open(fname, "rb")
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147 sessionData = pickle.load(f)
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148 f.close()
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149 if threadPool > 1:
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150 cpg._sessionFileLock.release()
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151 return sessionData
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152 else: return None
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153
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154 """ TODO: implement cookie storage type
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155 elif _sessionStorageType == "cookie":
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156 if request.simpleCookie.has_key('CSession') and request.simpleCookie.has_key('CSession-sig'):
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157 data = request.simpleCookie['CSession'].value
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158 sig = request.simpleCookie['CSession-sig'].value
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159 if md5.md5(data + cpg.configOption.siteKey).hexdigest() == sig:
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160 try:
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161 dumpStr = binascii.unhexlify(data)
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162 try: dumpStr = zlib.decompress(dumpStr)
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163 except: pass # zlib is not available in all python distros
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164 dumpStr = pickle.loads(dumpStr)
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165 return dumpStr
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166 except: pass
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167 return None
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168 """
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169
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170 def _cpCleanUpOldSessions(threadPool = None, sessionStorageType = None,
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171 sessionStorageFileDir = None):
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172 """ Clean up old sessions """
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173
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174 if threadPool is None:
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175 threadPool = cpg.configOption.threadPool
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176 if sessionStorageType is None:
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177 sessionStorageType = cpg.configOption.sessionStorageType
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178 if sessionStorageFileDir is None:
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179 sessionStorageFileDir = cpg.configOption.sessionStorageFileDir
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180
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181 # Clean up old session data
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182 now = time.time()
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183 if sessionStorageType == "ram":
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184 sessionIdToDeleteList = []
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185 for sessionId, (dummy, expirationTime) in cpg._sessionMap.items():
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186 if expirationTime < now:
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187 sessionIdToDeleteList.append(sessionId)
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188 for sessionId in sessionIdToDeleteList:
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189 del cpg._sessionMap[sessionId]
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190
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191 elif sessionStorageType=="file":
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192 # This process is very expensive because we go through all files, parse them and then delete them if the session is expired
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193 # One optimization would be to just store a list of (sessionId, expirationTime) in *one* file
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194 sessionFileList = os.listdir(sessionStorageFileDir)
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195 for sessionId in sessionFileList:
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196 try:
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197 dummy, expirationTime = _cpLoadSessionData(sessionId)
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198 if expirationTime < now:
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199 os.remove(os.path.join(sessionStorageFileDir, sessionId))
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200 except:
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201 pass
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202
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203 elif sessionStorageType == "cookie":
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204 # Nothing to do in this case: the session data is stored on the client
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205 pass
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206
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207 _cpFilterList = []