Mercurial > libervia-backend
annotate src/plugins/plugin_misc_file.py @ 1622:5b24d6bf5d15
core, bridge: actionsGet:
- added a new mechanism to keep actions until they are answered (or timeout-ed)
- keep_id must be explicitly used on actionNew
- actionsGet is used to retrive these actions
- the mechanism is used in deferXMLUI
author | Goffi <goffi@goffi.org> |
---|---|
date | Tue, 17 Nov 2015 21:28:58 +0100 |
parents | 3ec7511dbf28 |
children | 63cef4dbf2a4 |
rev | line source |
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1525 | 1 #!/usr/bin/python |
2 # -*- coding: utf-8 -*- | |
3 | |
4 # SAT plugin for file tansfer | |
5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Jérôme Poisson (goffi@goffi.org) | |
6 | |
7 # This program is free software: you can redistribute it and/or modify | |
8 # it under the terms of the GNU Affero General Public License as published by | |
9 # the Free Software Foundation, either version 3 of the License, or | |
10 # (at your option) any later version. | |
11 | |
12 # This program is distributed in the hope that it will be useful, | |
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 # GNU Affero General Public License for more details. | |
16 | |
17 # You should have received a copy of the GNU Affero General Public License | |
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | |
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20 from sat.core.i18n import _, D_ |
1525 | 21 from sat.core.constants import Const as C |
22 from sat.core.log import getLogger | |
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 |
1525 | 28 import os |
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29 import os.path |
1525 | 30 import uuid |
31 | |
32 | |
33 PLUGIN_INFO = { | |
34 "name": "File Tansfer", | |
35 "import_name": "FILE", | |
36 "type": C.PLUG_TYPE_MISC, | |
37 "main": "FilePlugin", | |
38 "handler": "no", | |
39 "description": _("""File Tansfer Management: | |
40 This plugin manage the various ways of sending a file, and choose the best one.""") | |
41 } | |
42 | |
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 |
1553 | 52 class SatFile(object): |
1525 | 53 """A file-like object to have high level files manipulation""" |
54 # TODO: manage "with" statement | |
55 | |
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56 def __init__(self, host, path, mode='rb', uid=None, size=None, data_cb=None, profile=C.PROF_KEY_NONE): |
1525 | 57 """ |
58 @param host: %(doc_host)s | |
59 @param path(str): path of the file to get | |
60 @param mode(str): same as for built-in "open" function | |
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 |
1525 | 63 will be automaticaly generated if None |
64 @param size(None, int): size of the file | |
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65 @param data_cb(None, callable): method to call on each data read/write |
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66 mainly useful to do things like calculating hash |
1525 | 67 """ |
68 self.host = host | |
69 self.uid = uid or unicode(uuid.uuid4()) | |
70 self._file = open(path, mode) | |
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71 self.size = size |
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72 self.data_cb = data_cb |
1525 | 73 self.profile = profile |
74 self.host.registerProgressCb(self.uid, self.getProgress, profile) | |
75 self.host.bridge.progressStarted(self.uid, self.profile) | |
76 | |
77 def close(self): | |
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78 position = self._file.tell() |
1525 | 79 self._file.close() |
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80 if not self.size or self.size == position: |
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81 self.host.bridge.progressFinished(self.uid, self.profile) |
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82 else: |
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83 self.host.bridge.progressError(self.uid, u"size doesn't match", self.profile) |
1525 | 84 self.host.removeProgressCb(self.uid, self.profile) |
85 | |
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86 def flush(self): |
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87 self._file.flush() |
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88 |
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89 def write(self, buf): |
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90 self._file.write(buf) |
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91 if self.data_cb is not None: |
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92 return self.data_cb(buf) |
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93 |
1525 | 94 def read(self, size=-1): |
95 read = self._file.read(size) | |
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96 if self.data_cb is not None and read: |
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97 self.data_cb(read) |
1525 | 98 return read |
99 | |
100 def seek(self, offset, whence=os.SEEK_SET): | |
101 self._file.seek(offset, whence) | |
102 | |
103 def tell(self): | |
104 return self._file.tell() | |
105 | |
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106 def getProgress(self, progress_id, profile): |
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107 ret = {'position': self._file.tell()} |
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108 if self.size: |
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109 ret['size'] = self.size |
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110 return ret |
1525 | 111 |
112 | |
113 class FilePlugin(object): | |
114 File=SatFile | |
115 | |
116 def __init__(self, host): | |
117 log.info(_("plugin File initialization")) | |
118 self.host = host | |
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119 host.bridge.addMethod("fileSend", ".plugin", in_sign='sssss', out_sign='a{ss}', method=self._fileSend, async=True) |
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120 self._file_callbacks = [] |
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121 |
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122 def _fileSend(self, peer_jid_s, filepath, name="", file_desc="", profile=C.PROF_KEY_NONE): |
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123 return self.fileSend(jid.JID(peer_jid_s), filepath, name or None, file_desc or None, profile) |
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124 |
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125 @defer.inlineCallbacks |
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126 def fileSend(self, peer_jid, filepath, filename=None, file_desc=None, profile=C.PROF_KEY_NONE): |
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127 """Send a file using best available method |
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128 |
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129 @param peer_jid(jid.JID): jid of the destinee |
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130 @param filepath(str): absolute path to the file |
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131 @param filename(unicode, None): name to use, or None to find it from filepath |
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132 @param file_desc(unicode, None): description of the file |
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133 @param profile: %(doc_profile)s |
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134 @return (dict): action dictionary, with progress id in case of success, else xmlui message |
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135 """ |
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136 if not os.path.isfile(filepath): |
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137 raise exceptions.DataError(u"The given path doesn't link to a file") |
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138 if not filename: |
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139 filename = os.path.basename(filepath) or '_' |
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140 for namespace, callback, priority, method_name in self._file_callbacks: |
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141 has_feature = yield self.host.hasFeature(namespace, peer_jid, profile) |
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142 if has_feature: |
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143 log.info(u"{name} method will be used to send the file".format(name=method_name)) |
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144 progress_id = yield defer.maybeDeferred(callback, peer_jid, filepath, filename, file_desc, profile) |
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145 defer.returnValue({'progress': progress_id}) |
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146 msg = u"Can't find any method to send file to {jid}".format(jid=peer_jid.full()) |
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147 log.warning(msg) |
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148 defer.returnValue({'xmlui': xml_tools.note(u"Can't transfer file", msg, C.XMLUI_DATA_LVL_WARNING).toXml()}) |
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149 |
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150 def register(self, namespace, callback, priority=0, method_name=None): |
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151 """Register a fileSending method |
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152 |
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153 @param namespace(unicode): XEP namespace |
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154 @param callback(callable): method to call (must have the same signature as [fileSend]) |
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155 @param priority(int): pririoty of this method, the higher available will be used |
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156 @param method_name(unicode): short name for the method, namespace will be used if None |
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157 """ |
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158 for data in self._file_callbacks: |
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159 if namespace == data[0]: |
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160 raise exceptions.ConflictError(u'A method with this namespace is already registered') |
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161 self._file_callbacks.append((namespace, callback, priority, method_name or namespace)) |
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162 self._file_callbacks.sort(key=lambda data: data[2], reverse=True) |
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163 |
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164 def unregister(self, namespace): |
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165 for idx, data in enumerate(self._file_callbacks): |
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166 if data[0] == namespace: |
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167 del [idx] |
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168 return |
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169 raise exceptions.NotFound(u"The namespace to unregister doesn't exist") |
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171 # Dialogs with user |
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172 # the overwrite check is done here |
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174 def _openFileWrite(self, file_path, transfer_data, file_data, profile): |
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175 assert 'file_obj' not in transfer_data |
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176 transfer_data['file_obj'] = SatFile( |
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177 self.host, |
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178 file_path, |
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179 'wb', |
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180 uid=file_data[PROGRESS_ID_KEY], |
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181 size=file_data['size'], |
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182 data_cb = file_data.get('data_cb'), |
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183 profile=profile, |
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184 ) |
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185 |
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186 def _gotConfirmation(self, data, peer_jid, transfer_data, file_data, profile): |
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187 """Called when the permission and dest path have been received |
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188 |
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189 @param peer_jid(jid.JID): jid of the file sender |
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190 @param transfer_data(dict): same as for [self.getDestDir] |
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191 @param file_data(dict): same as for [self.getDestDir] |
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192 @param profile: %(doc_profile)s |
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193 return (bool): True if copy is wanted and OK |
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194 False if user wants to cancel |
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195 if file exists ask confirmation and call again self._getDestDir if needed |
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196 """ |
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197 if data.get('cancelled', False): |
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198 return False |
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199 path = data['path'] |
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200 file_data['file_path'] = file_path = os.path.join(path, file_data['name']) |
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201 log.debug(u'destination file path set to {}'.format(file_path)) |
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202 |
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203 # we manage case where file already exists |
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204 if os.path.exists(file_path): |
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205 def check_overwrite(overwrite): |
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206 if overwrite: |
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207 self._openFileWrite(file_path, transfer_data, file_data, profile) |
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208 return True |
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209 else: |
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210 return self.getDestDir(peer_jid, transfer_data, file_data, profile) |
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211 |
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212 exists_d = xml_tools.deferConfirm( |
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213 self.host, |
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214 _(CONFIRM_OVERWRITE).format(file_path), |
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215 _(CONFIRM_OVERWRITE_TITLE), |
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216 action_extra={'meta_from_jid': peer_jid.full(), |
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217 'meta_type': C.META_TYPE_OVERWRITE, |
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218 'meta_progress_id': file_data[PROGRESS_ID_KEY] |
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219 }, |
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220 profile=profile) |
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221 exists_d.addCallback(check_overwrite) |
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222 return exists_d |
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223 |
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224 self._openFileWrite(file_path, transfer_data, file_data, profile) |
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225 return True |
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226 |
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227 def getDestDir(self, peer_jid, transfer_data, file_data, profile): |
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228 """Request confirmation and destination dir to user |
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229 |
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230 Overwrite confirmation is managed. |
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231 if transfer is confirmed, 'file_obj' is added to transfer_data |
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232 @param peer_jid(jid.JID): jid of the file sender |
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233 @param filename(unicode): name of the file |
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234 @param transfer_data(dict): data of the transfer session, |
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235 it will be only used to store the file_obj. |
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236 "file_obj" key *MUST NOT* exist before using getDestDir |
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237 @param file_data(dict): information about the file to be transfered |
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238 It MUST contain the following keys: |
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239 - peer_jid (jid.JID): other peer jid |
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240 - name (unicode): name of the file to trasnsfer |
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241 the name must not be empty or contain a "/" character |
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242 - size (int): size of the file |
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243 - desc (unicode): description of the file |
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244 - progress_id (unicode): id to use for progression |
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245 It *MUST NOT* contain the "peer" key |
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246 It may contain: |
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247 - data_cb (callable): method called on each data read/write |
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248 "file_path" will be added to this dict once destination selected |
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249 "size_human" will also be added with human readable file size |
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250 @param profile: %(doc_profile)s |
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251 return (defer.Deferred): True if transfer is accepted |
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252 """ |
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253 filename = file_data['name'] |
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254 assert filename and not '/' in filename |
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255 assert PROGRESS_ID_KEY in file_data |
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256 # human readable size |
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257 file_data['size_human'] = u'{:.6n} Mio'.format(float(file_data['size'])/(1024**2)) |
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258 d = xml_tools.deferDialog(self.host, |
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259 _(CONFIRM).format(peer=peer_jid.full(), **file_data), |
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260 _(CONFIRM_TITLE), |
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261 type_=C.XMLUI_DIALOG_FILE, |
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262 options={C.XMLUI_DATA_FILETYPE: C.XMLUI_DATA_FILETYPE_DIR}, |
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263 action_extra={'meta_from_jid': peer_jid.full(), |
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264 'meta_type': C.META_TYPE_FILE, |
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265 'meta_progress_id': file_data[PROGRESS_ID_KEY] |
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266 }, |
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267 profile=profile) |
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268 d.addCallback(self._gotConfirmation, peer_jid, transfer_data, file_data, profile) |
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269 return d |