annotate env/lib/python3.7/site-packages/boto/gs/acl.py @ 4:79f47841a781 draft

"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:47:39 -0400
parents 26e78fe6e8c4
children
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1 # Copyright 2010 Google Inc.
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2 #
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3 # Permission is hereby granted, free of charge, to any person obtaining a
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4 # copy of this software and associated documentation files (the
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5 # "Software"), to deal in the Software without restriction, including
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6 # without limitation the rights to use, copy, modify, merge, publish, dis-
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7 # tribute, sublicense, and/or sell copies of the Software, and to permit
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8 # persons to whom the Software is furnished to do so, subject to the fol-
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9 # lowing conditions:
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10 #
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11 # The above copyright notice and this permission notice shall be included
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12 # in all copies or substantial portions of the Software.
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13 #
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14 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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15 # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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16 # ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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17 # SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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18 # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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20 # IN THE SOFTWARE.
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21
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22 from boto.gs.user import User
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23 from boto.exception import InvalidAclError
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24
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25 ACCESS_CONTROL_LIST = 'AccessControlList'
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26 ALL_AUTHENTICATED_USERS = 'AllAuthenticatedUsers'
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27 ALL_USERS = 'AllUsers'
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28 DISPLAY_NAME = 'DisplayName'
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29 DOMAIN = 'Domain'
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30 EMAIL_ADDRESS = 'EmailAddress'
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31 ENTRY = 'Entry'
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32 ENTRIES = 'Entries'
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33 GROUP_BY_DOMAIN = 'GroupByDomain'
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34 GROUP_BY_EMAIL = 'GroupByEmail'
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35 GROUP_BY_ID = 'GroupById'
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36 ID = 'ID'
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37 NAME = 'Name'
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38 OWNER = 'Owner'
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39 PERMISSION = 'Permission'
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40 SCOPE = 'Scope'
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41 TYPE = 'type'
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42 USER_BY_EMAIL = 'UserByEmail'
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43 USER_BY_ID = 'UserById'
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44
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45
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46 CannedACLStrings = ['private', 'public-read', 'project-private',
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47 'public-read-write', 'authenticated-read',
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48 'bucket-owner-read', 'bucket-owner-full-control']
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49 """A list of Google Cloud Storage predefined (canned) ACL strings."""
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50
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51 SupportedPermissions = ['READ', 'WRITE', 'FULL_CONTROL']
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52 """A list of supported ACL permissions."""
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53
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54
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55 class ACL(object):
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56
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57 def __init__(self, parent=None):
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58 self.parent = parent
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59 self.entries = Entries(self)
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60
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61 @property
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62 def acl(self):
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63 return self
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64
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65 def __repr__(self):
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66 # Owner is optional in GS ACLs.
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67 if hasattr(self, 'owner'):
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68 entries_repr = ['Owner:%s' % self.owner.__repr__()]
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69 else:
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70 entries_repr = ['']
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71 acl_entries = self.entries
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72 if acl_entries:
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73 for e in acl_entries.entry_list:
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74 entries_repr.append(e.__repr__())
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75 return '<%s>' % ', '.join(entries_repr)
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76
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77 # Method with same signature as boto.s3.acl.ACL.add_email_grant(), to allow
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78 # polymorphic treatment at application layer.
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79 def add_email_grant(self, permission, email_address):
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80 entry = Entry(type=USER_BY_EMAIL, email_address=email_address,
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81 permission=permission)
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82 self.entries.entry_list.append(entry)
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83
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84 # Method with same signature as boto.s3.acl.ACL.add_user_grant(), to allow
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85 # polymorphic treatment at application layer.
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86 def add_user_grant(self, permission, user_id):
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87 entry = Entry(permission=permission, type=USER_BY_ID, id=user_id)
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88 self.entries.entry_list.append(entry)
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89
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90 def add_group_email_grant(self, permission, email_address):
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91 entry = Entry(type=GROUP_BY_EMAIL, email_address=email_address,
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92 permission=permission)
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93 self.entries.entry_list.append(entry)
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94
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95 def add_group_grant(self, permission, group_id):
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96 entry = Entry(type=GROUP_BY_ID, id=group_id, permission=permission)
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97 self.entries.entry_list.append(entry)
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98
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99 def startElement(self, name, attrs, connection):
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100 if name.lower() == OWNER.lower():
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101 self.owner = User(self)
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102 return self.owner
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103 elif name.lower() == ENTRIES.lower():
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104 self.entries = Entries(self)
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105 return self.entries
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106 else:
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107 return None
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108
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109 def endElement(self, name, value, connection):
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110 if name.lower() == OWNER.lower():
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111 pass
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112 elif name.lower() == ENTRIES.lower():
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113 pass
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114 else:
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115 setattr(self, name, value)
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116
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117 def to_xml(self):
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118 s = '<%s>' % ACCESS_CONTROL_LIST
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119 # Owner is optional in GS ACLs.
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120 if hasattr(self, 'owner'):
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121 s += self.owner.to_xml()
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122 acl_entries = self.entries
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123 if acl_entries:
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124 s += acl_entries.to_xml()
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125 s += '</%s>' % ACCESS_CONTROL_LIST
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126 return s
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127
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128
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129 class Entries(object):
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130
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131 def __init__(self, parent=None):
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132 self.parent = parent
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133 # Entries is the class that represents the same-named XML
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134 # element. entry_list is the list within this class that holds the data.
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135 self.entry_list = []
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136
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137 def __repr__(self):
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138 entries_repr = []
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139 for e in self.entry_list:
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140 entries_repr.append(e.__repr__())
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141 return '<Entries: %s>' % ', '.join(entries_repr)
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142
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143 def startElement(self, name, attrs, connection):
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144 if name.lower() == ENTRY.lower():
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145 entry = Entry(self)
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146 self.entry_list.append(entry)
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147 return entry
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148 else:
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149 return None
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150
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151 def endElement(self, name, value, connection):
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152 if name.lower() == ENTRY.lower():
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153 pass
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154 else:
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155 setattr(self, name, value)
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156
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157 def to_xml(self):
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158 if not self.entry_list:
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159 return ''
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160 s = '<%s>' % ENTRIES
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161 for entry in self.entry_list:
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162 s += entry.to_xml()
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163 s += '</%s>' % ENTRIES
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164 return s
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165
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166
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167 # Class that represents a single (Scope, Permission) entry in an ACL.
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168 class Entry(object):
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169
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170 def __init__(self, scope=None, type=None, id=None, name=None,
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171 email_address=None, domain=None, permission=None):
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172 if not scope:
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173 scope = Scope(self, type, id, name, email_address, domain)
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174 self.scope = scope
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175 self.permission = permission
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176
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177 def __repr__(self):
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178 return '<%s: %s>' % (self.scope.__repr__(), self.permission.__repr__())
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179
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180 def startElement(self, name, attrs, connection):
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181 if name.lower() == SCOPE.lower():
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182 # The following if statement used to look like this:
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183 # if not TYPE in attrs:
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184 # which caused problems because older versions of the
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185 # AttributesImpl class in the xml.sax library neglected to include
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186 # a __contains__() method (which Python calls to implement the
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187 # 'in' operator). So when you use the in operator, like the if
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188 # statement above, Python invokes the __getiter__() method with
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189 # index 0, which raises an exception. More recent versions of
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190 # xml.sax include the __contains__() method, rendering the in
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191 # operator functional. The work-around here is to formulate the
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192 # if statement as below, which is the legal way to query
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193 # AttributesImpl for containment (and is also how the added
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194 # __contains__() method works). At one time gsutil disallowed
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195 # xmlplus-based parsers, until this more specific problem was
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196 # determined.
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197 if TYPE not in attrs:
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198 raise InvalidAclError('Missing "%s" in "%s" part of ACL' %
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199 (TYPE, SCOPE))
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200 self.scope = Scope(self, attrs[TYPE])
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201 return self.scope
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202 elif name.lower() == PERMISSION.lower():
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203 pass
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204 else:
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205 return None
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206
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207 def endElement(self, name, value, connection):
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208 if name.lower() == SCOPE.lower():
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209 pass
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210 elif name.lower() == PERMISSION.lower():
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211 value = value.strip()
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212 if not value in SupportedPermissions:
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213 raise InvalidAclError('Invalid Permission "%s"' % value)
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214 self.permission = value
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215 else:
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216 setattr(self, name, value)
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217
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218 def to_xml(self):
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219 s = '<%s>' % ENTRY
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220 s += self.scope.to_xml()
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221 s += '<%s>%s</%s>' % (PERMISSION, self.permission, PERMISSION)
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222 s += '</%s>' % ENTRY
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223 return s
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224
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225
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226 class Scope(object):
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227
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228 # Map from Scope type.lower() to lower-cased list of allowed sub-elems.
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229 ALLOWED_SCOPE_TYPE_SUB_ELEMS = {
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230 ALL_AUTHENTICATED_USERS.lower() : [],
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231 ALL_USERS.lower() : [],
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232 GROUP_BY_DOMAIN.lower() : [DOMAIN.lower()],
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233 GROUP_BY_EMAIL.lower() : [
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234 DISPLAY_NAME.lower(), EMAIL_ADDRESS.lower(), NAME.lower()],
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235 GROUP_BY_ID.lower() : [DISPLAY_NAME.lower(), ID.lower(), NAME.lower()],
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236 USER_BY_EMAIL.lower() : [
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237 DISPLAY_NAME.lower(), EMAIL_ADDRESS.lower(), NAME.lower()],
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238 USER_BY_ID.lower() : [DISPLAY_NAME.lower(), ID.lower(), NAME.lower()]
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239 }
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240
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241 def __init__(self, parent, type=None, id=None, name=None,
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242 email_address=None, domain=None):
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243 self.parent = parent
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244 self.type = type
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245 self.name = name
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246 self.id = id
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247 self.domain = domain
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248 self.email_address = email_address
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249 if self.type.lower() not in self.ALLOWED_SCOPE_TYPE_SUB_ELEMS:
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250 raise InvalidAclError('Invalid %s %s "%s" ' %
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251 (SCOPE, TYPE, self.type))
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252
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253 def __repr__(self):
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254 named_entity = None
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255 if self.id:
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256 named_entity = self.id
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257 elif self.email_address:
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258 named_entity = self.email_address
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259 elif self.domain:
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260 named_entity = self.domain
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261 if named_entity:
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262 return '<%s: %s>' % (self.type, named_entity)
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263 else:
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264 return '<%s>' % self.type
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265
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266 def startElement(self, name, attrs, connection):
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267 if (not name.lower() in
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268 self.ALLOWED_SCOPE_TYPE_SUB_ELEMS[self.type.lower()]):
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269 raise InvalidAclError('Element "%s" not allowed in %s %s "%s" ' %
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270 (name, SCOPE, TYPE, self.type))
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271 return None
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272
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273 def endElement(self, name, value, connection):
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274 value = value.strip()
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275 if name.lower() == DOMAIN.lower():
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276 self.domain = value
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277 elif name.lower() == EMAIL_ADDRESS.lower():
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278 self.email_address = value
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279 elif name.lower() == ID.lower():
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280 self.id = value
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281 elif name.lower() == NAME.lower():
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282 self.name = value
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283 else:
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284 setattr(self, name, value)
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285
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286 def to_xml(self):
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287 s = '<%s type="%s">' % (SCOPE, self.type)
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288 if (self.type.lower() == ALL_AUTHENTICATED_USERS.lower()
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289 or self.type.lower() == ALL_USERS.lower()):
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290 pass
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291 elif self.type.lower() == GROUP_BY_DOMAIN.lower():
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292 s += '<%s>%s</%s>' % (DOMAIN, self.domain, DOMAIN)
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293 elif (self.type.lower() == GROUP_BY_EMAIL.lower()
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294 or self.type.lower() == USER_BY_EMAIL.lower()):
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295 s += '<%s>%s</%s>' % (EMAIL_ADDRESS, self.email_address,
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296 EMAIL_ADDRESS)
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parents:
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297 if self.name:
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298 s += '<%s>%s</%s>' % (NAME, self.name, NAME)
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299 elif (self.type.lower() == GROUP_BY_ID.lower()
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parents:
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300 or self.type.lower() == USER_BY_ID.lower()):
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parents:
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301 s += '<%s>%s</%s>' % (ID, self.id, ID)
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parents:
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302 if self.name:
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303 s += '<%s>%s</%s>' % (NAME, self.name, NAME)
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304 else:
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305 raise InvalidAclError('Invalid scope type "%s" ', self.type)
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parents:
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306
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307 s += '</%s>' % SCOPE
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308 return s