Mercurial > libervia-backend
annotate src/plugins/plugin_misc_file.py @ 2479:0d6c53e6c591
plugin blog static: added background parameter, to set an image
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 22 Jan 2018 08:36:36 +0100 |
| parents | 8b37a62336c3 |
| children | 0046283a285d |
| rev | line source |
|---|---|
|
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use of /usr/bin/env instead of /usr/bin/python in shebang
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1 #!/usr/bin/env python2 |
| 1525 | 2 # -*- coding: utf-8 -*- |
| 3 | |
| 4 # SAT plugin for file tansfer | |
|
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5 # Copyright (C) 2009-2017 Jérôme Poisson (goffi@goffi.org) |
| 1525 | 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 = { | |
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34 C.PI_NAME: "File Tansfer", |
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35 C.PI_IMPORT_NAME: "FILE", |
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36 C.PI_TYPE: C.PLUG_TYPE_MISC, |
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37 C.PI_MAIN: "FilePlugin", |
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38 C.PI_HANDLER: "no", |
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39 C.PI_DESCRIPTION: _("""File Tansfer Management: |
| 1525 | 40 This plugin manage the various ways of sending a file, and choose the best one.""") |
| 41 } | |
| 42 | |
| 43 | |
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44 SENDING = D_(u'Please select a file to send to {peer}') |
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45 SENDING_TITLE = D_(u'File sending') |
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46 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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47 CONFIRM_TITLE = D_(u'Confirm file transfer') |
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48 CONFIRM_OVERWRITE = D_(u'File {} already exists, are you sure you want to overwrite ?') |
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49 CONFIRM_OVERWRITE_TITLE = D_(u'File exists') |
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core (param), plugin file: set security_limit for acount changes, backend (dis)connection, and put a higher one for file send
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50 SECURITY_LIMIT = 30 |
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51 |
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52 PROGRESS_ID_KEY = 'progress_id' |
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53 |
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54 |
| 1553 | 55 class SatFile(object): |
| 1525 | 56 """A file-like object to have high level files manipulation""" |
| 57 # TODO: manage "with" statement | |
| 58 | |
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59 def __init__(self, host, path, mode='rb', uid=None, size=None, data_cb=None, auto_end_signals=True, profile=C.PROF_KEY_NONE): |
| 1525 | 60 """ |
| 61 @param host: %(doc_host)s | |
| 62 @param path(str): path of the file to get | |
| 63 @param mode(str): same as for built-in "open" function | |
| 64 @param uid(unicode, None): unique id identifing this progressing element | |
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65 This uid will be used with self.host.progressGet |
| 1525 | 66 will be automaticaly generated if None |
| 67 @param size(None, int): size of the file | |
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68 @param data_cb(None, callable): method to call on each data read/write |
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69 mainly useful to do things like calculating hash |
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70 @param auto_end_signals(bool): if True, progressFinished and progressError signals are automatically sent |
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71 if False, you'll have to call self.progressFinished and self.progressError yourself |
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72 progressStarted signal is always sent automatically |
| 1525 | 73 """ |
| 74 self.host = host | |
| 75 self.uid = uid or unicode(uuid.uuid4()) | |
| 76 self._file = open(path, mode) | |
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77 self.size = size |
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78 self.data_cb = data_cb |
| 1525 | 79 self.profile = profile |
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80 self.auto_end_signals = auto_end_signals |
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81 metadata = self.getProgressMetadata() |
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82 self.host.registerProgressCb(self.uid, self.getProgress, metadata, profile=profile) |
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83 self.host.bridge.progressStarted(self.uid, metadata, self.profile) |
| 1525 | 84 |
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85 def checkSize(self): |
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86 """Check that current size correspond to given size |
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87 |
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88 must be used when the transfer is supposed to be finished |
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89 @return (bool): True if the position is the same as given size |
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90 @raise exceptions.NotFound: size has not be specified |
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91 """ |
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92 position = self._file.tell() |
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93 if self.size is None: |
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94 raise exceptions.NotFound |
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95 return position == self.size |
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96 |
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97 |
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98 def close(self, progress_metadata=None, error=None): |
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99 """Close the current file |
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100 |
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101 @param progress_metadata(None, dict): metadata to send with _onProgressFinished message |
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102 @param error(None, unicode): set to an error message if progress was not successful |
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103 mutually exclusive with progress_metadata |
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104 error can happen even if error is None, if current size differ from given size |
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105 """ |
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106 if self._file.closed: |
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107 return # avoid double close (which is allowed) error |
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108 if error is None: |
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109 try: |
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110 size_ok = self.checkSize() |
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111 except exceptions.NotFound: |
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112 size_ok = True |
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113 if not size_ok: |
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114 error = u'declared and actual size mismatch' |
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115 log.warning(error) |
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116 progress_metadata = None |
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117 |
| 1525 | 118 self._file.close() |
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119 |
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120 if self.auto_end_signals: |
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121 if error is None: |
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122 self.progressFinished(progress_metadata) |
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123 else: |
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124 assert progress_metadata is None |
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125 self.progressError(error) |
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126 |
| 1525 | 127 self.host.removeProgressCb(self.uid, self.profile) |
| 128 | |
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129 def progressFinished(self, metadata=None): |
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130 if metadata is None: |
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131 metadata = {} |
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132 self.host.bridge.progressFinished(self.uid, metadata, self.profile) |
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133 |
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134 def progressError(self, error): |
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135 self.host.bridge.progressError(self.uid, error, self.profile) |
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136 |
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137 def flush(self): |
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138 self._file.flush() |
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139 |
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140 def write(self, buf): |
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141 self._file.write(buf) |
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142 if self.data_cb is not None: |
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143 return self.data_cb(buf) |
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144 |
| 1525 | 145 def read(self, size=-1): |
| 146 read = self._file.read(size) | |
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147 if self.data_cb is not None and read: |
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148 self.data_cb(read) |
| 1525 | 149 return read |
| 150 | |
| 151 def seek(self, offset, whence=os.SEEK_SET): | |
| 152 self._file.seek(offset, whence) | |
| 153 | |
| 154 def tell(self): | |
| 155 return self._file.tell() | |
| 156 | |
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157 def mode(self): |
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158 return self._file.mode() |
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159 |
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160 def getProgressMetadata(self): |
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161 """Return progression metadata as given to progressStarted |
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162 |
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163 @return (dict): metadata (check bridge for documentation) |
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164 """ |
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165 metadata = {'type': C.META_TYPE_FILE} |
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166 |
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167 mode = self._file.mode |
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168 if '+' in mode: |
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169 pass # we have no direction in read/write modes |
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170 elif mode in ('r', 'rb'): |
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171 metadata['direction'] = 'out' |
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172 elif mode in ('w', 'wb'): |
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173 metadata['direction'] = 'in' |
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174 elif 'U' in mode: |
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175 metadata['direction'] = 'out' |
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176 else: |
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177 raise exceptions.InternalError |
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178 |
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179 metadata['name'] = self._file.name |
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180 |
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181 return metadata |
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182 |
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183 def getProgress(self, progress_id, profile): |
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184 ret = {'position': self._file.tell()} |
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185 if self.size: |
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186 ret['size'] = self.size |
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187 return ret |
| 1525 | 188 |
| 189 | |
| 190 class FilePlugin(object): | |
| 191 File=SatFile | |
| 192 | |
| 193 def __init__(self, host): | |
| 194 log.info(_("plugin File initialization")) | |
| 195 self.host = host | |
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196 host.bridge.addMethod("fileSend", ".plugin", in_sign='sssss', out_sign='a{ss}', method=self._fileSend, async=True) |
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197 self._file_callbacks = [] |
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198 host.importMenu((D_("Action"), D_("send file")), self._fileSendMenu, security_limit=10, help_string=D_("Send a file"), type_=C.MENU_SINGLE) |
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199 |
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200 def _fileSend(self, peer_jid_s, filepath, name="", file_desc="", profile=C.PROF_KEY_NONE): |
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201 return self.fileSend(jid.JID(peer_jid_s), filepath, name or None, file_desc or None, profile) |
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202 |
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203 @defer.inlineCallbacks |
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204 def fileSend(self, peer_jid, filepath, filename=None, file_desc=None, profile=C.PROF_KEY_NONE): |
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205 """Send a file using best available method |
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206 |
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207 @param peer_jid(jid.JID): jid of the destinee |
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208 @param filepath(str): absolute path to the file |
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209 @param filename(unicode, None): name to use, or None to find it from filepath |
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210 @param file_desc(unicode, None): description of the file |
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211 @param profile: %(doc_profile)s |
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212 @return (dict): action dictionary, with progress id in case of success, else xmlui message |
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213 """ |
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214 client = self.host.getClient(profile) |
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215 if not os.path.isfile(filepath): |
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216 raise exceptions.DataError(u"The given path doesn't link to a file") |
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217 if not filename: |
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218 filename = os.path.basename(filepath) or '_' |
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219 for namespace, callback, priority, method_name in self._file_callbacks: |
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220 has_feature = yield self.host.hasFeature(client, namespace, peer_jid) |
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221 if has_feature: |
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222 log.info(u"{name} method will be used to send the file".format(name=method_name)) |
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223 progress_id = yield callback(peer_jid, filepath, filename, file_desc, profile) |
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224 defer.returnValue({'progress': progress_id}) |
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225 msg = u"Can't find any method to send file to {jid}".format(jid=peer_jid.full()) |
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226 log.warning(msg) |
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227 defer.returnValue({'xmlui': xml_tools.note(u"Can't transfer file", msg, C.XMLUI_DATA_LVL_WARNING).toXml()}) |
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228 |
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229 def _onFileChoosed(self, peer_jid, data, profile): |
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230 cancelled = C.bool(data.get("cancelled", C.BOOL_FALSE)) |
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231 if cancelled: |
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232 return |
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233 path=data['path'] |
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234 return self.fileSend(peer_jid, path, profile=profile) |
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235 |
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236 def _fileSendMenu(self, data, profile): |
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237 """ XMLUI activated by menu: return file sending UI |
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238 |
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239 @param profile: %(doc_profile)s |
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240 """ |
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241 try: |
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242 jid_ = jid.JID(data['jid']) |
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243 except RuntimeError: |
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244 raise exceptions.DataError(_("Invalid JID")) |
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245 |
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246 file_choosed_id = self.host.registerCallback(lambda data, profile: self._onFileChoosed(jid_, data, profile), with_data=True, one_shot=True) |
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247 xml_ui = xml_tools.XMLUI( |
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248 C.XMLUI_DIALOG, |
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249 dialog_opt = { |
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250 C.XMLUI_DATA_TYPE: C.XMLUI_DIALOG_FILE, |
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251 C.XMLUI_DATA_MESS: _(SENDING).format(peer=jid_.full())}, |
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252 title = _(SENDING_TITLE), |
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253 submit_id = file_choosed_id) |
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254 |
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255 return {'xmlui': xml_ui.toXml()} |
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256 |
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257 def register(self, namespace, callback, priority=0, method_name=None): |
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258 """Register a fileSending method |
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259 |
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260 @param namespace(unicode): XEP namespace |
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261 @param callback(callable): method to call (must have the same signature as [fileSend]) |
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262 @param priority(int): pririoty of this method, the higher available will be used |
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263 @param method_name(unicode): short name for the method, namespace will be used if None |
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264 """ |
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265 for data in self._file_callbacks: |
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266 if namespace == data[0]: |
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267 raise exceptions.ConflictError(u'A method with this namespace is already registered') |
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268 self._file_callbacks.append((namespace, callback, priority, method_name or namespace)) |
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269 self._file_callbacks.sort(key=lambda data: data[2], reverse=True) |
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270 |
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271 def unregister(self, namespace): |
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272 for idx, data in enumerate(self._file_callbacks): |
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273 if data[0] == namespace: |
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274 del [idx] |
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275 return |
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276 raise exceptions.NotFound(u"The namespace to unregister doesn't exist") |
| 1525 | 277 |
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278 # Dialogs with user |
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279 # the overwrite check is done here |
| 1525 | 280 |
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281 def _openFileWrite(self, file_path, transfer_data, file_data, profile): |
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282 assert 'file_obj' not in transfer_data |
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283 transfer_data['file_obj'] = SatFile( |
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284 self.host, |
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285 file_path, |
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286 'wb', |
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287 uid=file_data[PROGRESS_ID_KEY], |
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288 size=file_data['size'], |
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289 data_cb = file_data.get('data_cb'), |
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290 profile=profile, |
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291 ) |
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292 |
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293 def _gotConfirmation(self, data, peer_jid, transfer_data, file_data, profile): |
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294 """Called when the permission and dest path have been received |
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295 |
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296 @param peer_jid(jid.JID): jid of the file sender |
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297 @param transfer_data(dict): same as for [self.getDestDir] |
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298 @param file_data(dict): same as for [self.getDestDir] |
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299 @param profile: %(doc_profile)s |
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300 return (bool): True if copy is wanted and OK |
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301 False if user wants to cancel |
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302 if file exists ask confirmation and call again self._getDestDir if needed |
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303 """ |
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304 if data.get('cancelled', False): |
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305 return False |
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306 path = data['path'] |
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307 file_data['file_path'] = file_path = os.path.join(path, file_data['name']) |
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308 log.debug(u'destination file path set to {}'.format(file_path)) |
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309 |
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310 # we manage case where file already exists |
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311 if os.path.exists(file_path): |
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312 def check_overwrite(overwrite): |
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313 if overwrite: |
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314 self._openFileWrite(file_path, transfer_data, file_data, profile) |
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315 return True |
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316 else: |
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317 return self.getDestDir(peer_jid, transfer_data, file_data, profile) |
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318 |
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319 exists_d = xml_tools.deferConfirm( |
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320 self.host, |
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321 _(CONFIRM_OVERWRITE).format(file_path), |
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322 _(CONFIRM_OVERWRITE_TITLE), |
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323 action_extra={'meta_from_jid': peer_jid.full(), |
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324 'meta_type': C.META_TYPE_OVERWRITE, |
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325 'meta_progress_id': file_data[PROGRESS_ID_KEY] |
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326 }, |
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327 security_limit=SECURITY_LIMIT, |
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328 profile=profile) |
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329 exists_d.addCallback(check_overwrite) |
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330 return exists_d |
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331 |
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332 self._openFileWrite(file_path, transfer_data, file_data, profile) |
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333 return True |
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334 |
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335 def getDestDir(self, peer_jid, transfer_data, file_data, profile): |
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336 """Request confirmation and destination dir to user |
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337 |
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338 Overwrite confirmation is managed. |
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339 if transfer is confirmed, 'file_obj' is added to transfer_data |
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340 @param peer_jid(jid.JID): jid of the file sender |
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341 @param filename(unicode): name of the file |
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342 @param transfer_data(dict): data of the transfer session, |
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343 it will be only used to store the file_obj. |
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344 "file_obj" key *MUST NOT* exist before using getDestDir |
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345 @param file_data(dict): information about the file to be transfered |
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346 It MUST contain the following keys: |
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347 - peer_jid (jid.JID): other peer jid |
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348 - name (unicode): name of the file to trasnsfer |
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349 the name must not be empty or contain a "/" character |
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350 - size (int): size of the file |
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351 - desc (unicode): description of the file |
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352 - progress_id (unicode): id to use for progression |
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353 It *MUST NOT* contain the "peer" key |
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354 It may contain: |
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355 - data_cb (callable): method called on each data read/write |
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356 "file_path" will be added to this dict once destination selected |
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357 "size_human" will also be added with human readable file size |
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358 @param profile: %(doc_profile)s |
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359 return (defer.Deferred): True if transfer is accepted |
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360 """ |
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361 filename = file_data['name'] |
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362 assert filename and not '/' in filename |
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363 assert PROGRESS_ID_KEY in file_data |
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364 # human readable size |
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365 file_data['size_human'] = u'{:.6n} Mio'.format(float(file_data['size'])/(1024**2)) |
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366 d = xml_tools.deferDialog(self.host, |
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367 _(CONFIRM).format(peer=peer_jid.full(), **file_data), |
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368 _(CONFIRM_TITLE), |
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369 type_=C.XMLUI_DIALOG_FILE, |
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370 options={C.XMLUI_DATA_FILETYPE: C.XMLUI_DATA_FILETYPE_DIR}, |
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371 action_extra={'meta_from_jid': peer_jid.full(), |
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372 'meta_type': C.META_TYPE_FILE, |
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373 'meta_progress_id': file_data[PROGRESS_ID_KEY] |
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374 }, |
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375 security_limit=SECURITY_LIMIT, |
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376 profile=profile) |
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377 d.addCallback(self._gotConfirmation, peer_jid, transfer_data, file_data, profile) |
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378 return d |