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annotate src/plugins/plugin_misc_file.py @ 1593:791c45ed8659

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jp: added param/set command
author Goffi <goffi@goffi.org>
date Sat, 14 Nov 2015 19:18:10 +0100
parents 846a39900fa6
children b144babc2658
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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.core import exceptions
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25 from sat.tools import xml_tools
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26 from twisted.internet import defer
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27 from twisted.words.protocols.jabber import jid
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28 import os
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29 import os.path
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30 import uuid
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31
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32
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33 PLUGIN_INFO = {
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34 "name": "File Tansfer",
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35 "import_name": "FILE",
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36 "type": C.PLUG_TYPE_MISC,
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37 "main": "FilePlugin",
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38 "handler": "no",
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39 "description": _("""File Tansfer Management:
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40 This plugin manage the various ways of sending a file, and choose the best one.""")
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41 }
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42
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43
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44 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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45 CONFIRM_TITLE = D_(u'Confirm file transfer')
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46 CONFIRM_OVERWRITE = D_(u'File {} already exists, are you sure you want to overwrite ?')
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47 CONFIRM_OVERWRITE_TITLE = D_(u'File exists')
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48
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49 PROGRESS_ID_KEY = 'progress_id'
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50
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51
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52 class SatFile(object):
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53 """A file-like object to have high level files manipulation"""
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54 # TODO: manage "with" statement
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55
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56 def __init__(self, host, path, mode='r', uid=None, size=None, profile=C.PROF_KEY_NONE):
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57 """
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58 @param host: %(doc_host)s
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59 @param path(str): path of the file to get
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60 @param mode(str): same as for built-in "open" function
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61 @param uid(unicode, None): unique id identifing this progressing element
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62 This uid will be used with self.host.progressGet
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63 will be automaticaly generated if None
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64 @param size(None, int): size of the file
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65 """
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66 self.host = host
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67 self.uid = uid or unicode(uuid.uuid4())
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68 self._file = open(path, mode)
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69 self.size = None
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70 self.profile = profile
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71 self.eof = defer.Deferred()
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72 self.host.registerProgressCb(self.uid, self.getProgress, profile)
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73 self.host.bridge.progressStarted(self.uid, self.profile)
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74 self.eof.addCallback(lambda ignore: self.host.bridge.progressFinished(self.uid, self.profile))
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75 self.eof.addErrback(lambda failure: self.host.bridge.progressError(self.uid, unicode(failure), self.profile))
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76
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77 def close(self):
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78 self._file.close()
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79 self.host.removeProgressCb(self.uid, self.profile)
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80
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81 def flush(self):
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82 self._file.flush()
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83
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84 def write(self, buf):
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85 self._file.write(buf)
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86
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87 def read(self, size=-1):
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88 read = self._file.read(size)
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89 if not read:
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90 self.eof.callback(None)
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91 return read
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92
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93 def seek(self, offset, whence=os.SEEK_SET):
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94 self._file.seek(offset, whence)
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95
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96 def tell(self):
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97 return self._file.tell()
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98
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99 def getProgress(self, progress_id, data, profile):
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100 return {'position': self._file.tell(), 'size': self.size or 0}
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101
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102
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103 class FilePlugin(object):
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104 File=SatFile
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105
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106 def __init__(self, host):
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107 log.info(_("plugin File initialization"))
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108 self.host = host
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109 host.bridge.addMethod("fileSend", ".plugin", in_sign='sssss', out_sign='a{ss}', method=self._fileSend, async=True)
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110 self._file_callbacks = []
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111
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112 def _fileSend(self, peer_jid_s, filepath, name="", file_desc="", profile=C.PROF_KEY_NONE):
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113 return self.fileSend(jid.JID(peer_jid_s), filepath, name or None, file_desc or None, profile)
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114
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115 @defer.inlineCallbacks
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116 def fileSend(self, peer_jid, filepath, filename=None, file_desc=None, profile=C.PROF_KEY_NONE):
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117 """Send a file using best available method
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118
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119 @param peer_jid(jid.JID): jid of the destinee
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120 @param filepath(str): absolute path to the file
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121 @param filename(unicode, None): name to use, or None to find it from filepath
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122 @param file_desc(unicode, None): description of the file
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123 @param profile: %(doc_profile)s
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124 @return (dict): action dictionary, with progress id in case of success, else xmlui message
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125 """
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126 if not os.path.isfile(filepath):
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127 raise exceptions.DataError(u"The given path doesn't link to a file")
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128 if not filename:
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129 filename = os.path.basename(filepath) or '_'
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130 for namespace, callback, priority, method_name in self._file_callbacks:
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131 has_feature = yield self.host.hasFeature(namespace, peer_jid, profile)
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132 if has_feature:
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133 log.info(u"{name} method will be used to send the file".format(name=method_name))
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134 progress_id = yield defer.maybeDeferred(callback, peer_jid, filepath, filename, file_desc, profile)
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135 defer.returnValue({'progress': progress_id})
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136 msg = u"Can't find any method to send file to {jid}".format(jid=peer_jid.full())
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137 log.warning(msg)
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138 defer.returnValue({'xmlui': xml_tools.note(u"Can't transfer file", msg, C.XMLUI_DATA_LVL_WARNING).toXml()})
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139
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140 def register(self, namespace, callback, priority=0, method_name=None):
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141 """Register a fileSending method
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142
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143 @param namespace(unicode): XEP namespace
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144 @param callback(callable): method to call (must have the same signature as [fileSend])
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145 @param priority(int): pririoty of this method, the higher available will be used
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146 @param method_name(unicode): short name for the method, namespace will be used if None
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147 """
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148 for data in self._file_callbacks:
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149 if namespace == data[0]:
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150 raise exceptions.ConflictError(u'A method with this namespace is already registered')
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151 self._file_callbacks.append((namespace, callback, priority, method_name or namespace))
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152 self._file_callbacks.sort(key=lambda data: data[2], reverse=True)
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153
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154 def unregister(self, namespace):
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155 for idx, data in enumerate(self._file_callbacks):
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156 if data[0] == namespace:
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diff changeset
157 del [idx]
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158 return
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159 raise exceptions.NotFound(u"The namespace to unregister doesn't exist")
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160
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161 # Dialogs with user
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162 # the overwrite check is done here
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163
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164 def _openFileWrite(self, file_path, transfer_data, file_data, profile):
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165 assert 'file_obj' not in transfer_data
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166 transfer_data['file_obj'] = SatFile(
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167 self.host,
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168 file_path,
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169 'w',
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170 uid=file_data[PROGRESS_ID_KEY],
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171 size=file_data['size'],
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172 profile=profile,
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173 )
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174
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175 def _gotConfirmation(self, data, peer_jid, transfer_data, file_data, profile):
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176 """Called when the permission and dest path have been received
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177
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178 @param peer_jid(jid.JID): jid of the file sender
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179 @param transfer_data(dict): same as for [self.getDestDir]
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180 @param file_data(dict): same as for [self.getDestDir]
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181 @param profile: %(doc_profile)s
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182 return (bool): True if copy is wanted and OK
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183 False if user wants to cancel
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184 if file exists ask confirmation and call again self._getDestDir if needed
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185 """
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186 if data.get('cancelled', False):
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187 return False
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188 path = data['path']
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189 file_data['file_path'] = file_path = os.path.join(path, file_data['name'])
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190 log.debug(u'destination file path set to {}'.format(file_path))
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191
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192 # we manage case where file already exists
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193 if os.path.exists(file_path):
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194 def check_overwrite(overwrite):
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195 if overwrite:
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196 self._openFileWrite(file_path, transfer_data, file_data, profile)
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197 return True
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198 else:
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199 return self.getDestDir(peer_jid, transfer_data, file_data, profile)
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200
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201 exists_d = xml_tools.deferConfirm(
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202 self.host,
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203 _(CONFIRM_OVERWRITE).format(file_path),
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204 _(CONFIRM_OVERWRITE_TITLE),
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205 profile=profile)
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206 exists_d.addCallback(check_overwrite)
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207 return exists_d
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208
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209 self._openFileWrite(file_path, transfer_data, file_data, profile)
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210 return True
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211
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212 def getDestDir(self, peer_jid, transfer_data, file_data, profile):
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213 """Request confirmation and destination dir to user
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214
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215 Overwrite confirmation is managed.
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216 if transfer is confirmed, 'file_obj' is added to transfer_data
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217 @param peer_jid(jid.JID): jid of the file sender
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218 @param filename(unicode): name of the file
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219 @param transfer_data(dict): data of the transfer session,
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220 it will be only used to store the file_obj.
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221 "file_obj" key *MUST NOT* exist before using getDestDir
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222 @param file_data(dict): information about the file to be transfered
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223 It MUST contain the following keys:
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224 - peer_jid (jid.JID): other peer jid
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225 - name (unicode): name of the file to trasnsfer
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226 the name must not be empty or contain a "/" character
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227 - size (int): size of the file
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228 - progress_id (unicode): id to use for progression
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229 It may content the key used in CONFIRM constant
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230 It *MUST NOT* contain the "peer" key
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231 "file_path" will be added to this dict once destination selected
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232 "size_human" will also be added with human readable file size
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233 @param profile: %(doc_profile)s
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234 return (defer.Deferred): True if transfer is accepted
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235 """
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236 filename = file_data['name']
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237 assert filename and not '/' in filename
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238 assert PROGRESS_ID_KEY in file_data
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239 # human readable size
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240 file_data['size_human'] = u'{:.6n} Mio'.format(float(file_data['size'])/(1024**2))
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241 d = xml_tools.deferDialog(self.host,
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242 _(CONFIRM).format(peer=peer_jid.full(), **file_data),
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243 _(CONFIRM_TITLE),
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244 type_=C.XMLUI_DIALOG_FILE,
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245 options={C.XMLUI_DATA_FILETYPE: C.XMLUI_DATA_FILETYPE_DIR},
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246 profile=profile)
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parents: 1568
diff changeset
247 d.addCallback(self._gotConfirmation, peer_jid, transfer_data, file_data, profile)
babd97d80049 plugins XEP-0234, file: moved file request dialog to file plugin
Goffi <goffi@goffi.org>
parents: 1568
diff changeset
248 return d