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annotate src/plugins/plugin_misc_file.py @ 1576:d5f59ba166fe

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plugins IP: getLocalIPs now return localhost IP instead of an empty list if no non-localhost ip can be found
author Goffi <goffi@goffi.org>
date Wed, 11 Nov 2015 18:19:49 +0100
parents 833bdb227b16
children 846a39900fa6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT plugin for file tansfer
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5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _, D_
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23 log = getLogger(__name__)
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24 from sat.tools import xml_tools
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25 from twisted.internet import defer
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26 import os
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27 import uuid
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28
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29
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30 PLUGIN_INFO = {
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31 "name": "File Tansfer",
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32 "import_name": "FILE",
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33 "type": C.PLUG_TYPE_MISC,
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34 "main": "FilePlugin",
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35 "handler": "no",
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36 "description": _("""File Tansfer Management:
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37 This plugin manage the various ways of sending a file, and choose the best one.""")
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38 }
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39
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40
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41 CONFIRM = D_(u'{peer} wants to send the file "{name}" to you:\n{desc}\n\nThe file has a size of {size_human}\n\nDo you accept ?')
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42 CONFIRM_TITLE = D_(u'Confirm file transfer')
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43 CONFIRM_OVERWRITE = D_(u'File {} already exists, are you sure you want to overwrite ?')
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44 CONFIRM_OVERWRITE_TITLE = D_(u'File exists')
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45
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46
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47 class SatFile(object):
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48 """A file-like object to have high level files manipulation"""
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49 # TODO: manage "with" statement
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50
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51 def __init__(self, host, path, mode='r', uid=None, size=None, profile=C.PROF_KEY_NONE):
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52 """
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53 @param host: %(doc_host)s
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54 @param path(str): path of the file to get
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55 @param mode(str): same as for built-in "open" function
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56 @param uid(unicode, None): unique id identifing this progressing element
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57 will be automaticaly generated if None
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58 @param size(None, int): size of the file
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59 """
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60 self.host = host
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61 self.uid = uid or unicode(uuid.uuid4())
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62 self._file = open(path, mode)
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63 self.size = None
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64 self.profile = profile
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65 self.eof = defer.Deferred()
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66 self.host.registerProgressCb(self.uid, self.getProgress, profile)
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67 self.host.bridge.progressStarted(self.uid, self.profile)
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68 self.eof.addCallback(lambda ignore: self.host.bridge.progressFinished(self.uid, self.profile))
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69 self.eof.addErrback(lambda failure: self.host.bridge.progressError(self.uid, unicode(failure), self.profile))
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70
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71 def close(self):
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72 self._file.close()
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73 self.host.removeProgressCb(self.uid, self.profile)
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74
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75 def flush(self):
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76 self._file.flush()
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77
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78 def write(self, buf):
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79 self._file.write(buf)
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80
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81 def read(self, size=-1):
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82 read = self._file.read(size)
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83 if not read:
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84 self.eof.callback(None)
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85 return read
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86
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87 def seek(self, offset, whence=os.SEEK_SET):
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88 self._file.seek(offset, whence)
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89
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90 def tell(self):
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91 return self._file.tell()
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92
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93 def getProgress(self, progress_id, data, profile):
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94 return {'position': self._file.tell(), 'size': self.size or 0}
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95
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96
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97 class FilePlugin(object):
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98 File=SatFile
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99
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100 def __init__(self, host):
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101 log.info(_("plugin File initialization"))
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102 self.host = host
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103
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104 # Dialogs with user
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105 # the overwrite check is done here
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106
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107 def _openFileWrite(self, file_path, transfer_data, file_data, profile):
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108 assert 'file_obj' not in transfer_data
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109 transfer_data['file_obj'] = SatFile(
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110 self.host,
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111 file_path,
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112 'w',
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113 size=file_data['size'],
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114 profile=profile,
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115 )
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116
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117 def _gotConfirmation(self, data, peer_jid, transfer_data, file_data, profile):
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118 """Called when the permission and dest path have been received
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119
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120 @param peer_jid(jid.JID): jid of the file sender
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121 @param transfer_data(dict): same as for [self.getDestDir]
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122 @param file_data(dict): same as for [self.getDestDir]
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123 @param profile: %(doc_profile)s
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124 return (bool): True if copy is wanted and OK
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125 False if user wants to cancel
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126 if file exists ask confirmation and call again self._getDestDir if needed
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127 """
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128 if data.get('cancelled', False):
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129 return False
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130 path = data['path']
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131 file_data['file_path'] = file_path = os.path.join(path, file_data['name'])
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132 log.debug(u'destination file path set to {}'.format(file_path))
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133
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134 # we manage case where file already exists
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135 if os.path.exists(file_path):
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136 def check_overwrite(overwrite):
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137 if overwrite:
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138 self._openFileWrite(file_path, transfer_data, file_data, profile)
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139 return True
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140 else:
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141 return self.getDestDir(peer_jid, transfer_data, file_data, profile)
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142
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143 exists_d = xml_tools.deferConfirm(
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144 self.host,
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145 _(CONFIRM_OVERWRITE).format(file_path),
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146 _(CONFIRM_OVERWRITE_TITLE),
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147 profile=profile)
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148 exists_d.addCallback(check_overwrite)
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149 return exists_d
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150
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151 self._openFileWrite(file_path, transfer_data, file_data, profile)
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152 return True
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153
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154 def getDestDir(self, peer_jid, transfer_data, file_data, profile):
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155 """Request confirmation and destination dir to user
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156
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157 Overwrite confirmation is managed.
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158 if transfer is confirmed, 'file_obj' is added to transfer_data
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159 @param peer_jid(jid.JID): jid of the file sender
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160 @param filename(unicode): name of the file
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161 @param transfer_data(dict): data of the transfer session,
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162 it will be only used to store the file_obj.
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163 "file_obj" key *MUST NOT* exist before using getDestDir
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164 @param file_data(dict): information about the file to be transfered
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165 It MUST contain the following keys:
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166 - peer_jid (jid.JID): other peer jid
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167 - name (unicode): name of the file to trasnsfer
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168 the name must not be empty or contain a "/" character
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169 - size (int): size of the file
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170 It may content the key used in CONFIRM constant
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171 It *MUST NOT* contain the "peer" key
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172 "file_path" will be added to this dict once destination selected
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173 "size_human" will also be added with human readable file size
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174 @param profile: %(doc_profile)s
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175 return (defer.Deferred): True if transfer is accepted
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176 """
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177 filename = file_data['name']
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178 assert filename and not '/' in filename
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179 # human readable size
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180 file_data['size_human'] = u'{:.6n} Mio'.format(float(file_data['size'])/(1024**2))
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181 d = xml_tools.deferDialog(self.host,
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182 _(CONFIRM).format(peer=peer_jid.full(), **file_data),
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183 _(CONFIRM_TITLE),
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184 type_=C.XMLUI_DIALOG_FILE,
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185 options={C.XMLUI_DATA_FILETYPE: C.XMLUI_DATA_FILETYPE_DIR},
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186 profile=profile)
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187 d.addCallback(self._gotConfirmation, peer_jid, transfer_data, file_data, profile)
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188 return d