Mercurial > libervia-backend
annotate sat/plugins/plugin_comp_file_sharing.py @ 3047:cf843dd7c345
jp (debug): new "theme" command to print colour theme according to `background` value:
fix 321
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 01 Oct 2019 22:49:11 +0200 |
| parents | ab2696e34d29 |
| children | 9d0df638c8b4 |
| rev | line source |
|---|---|
| 3028 | 1 #!/usr/bin/env python3 |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SAT plugin for parrot mode (experimental) |
| 2771 | 5 # Copyright (C) 2009-2019 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 _ |
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21 from sat.core.constants import Const as C |
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22 from sat.core import exceptions |
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23 from sat.core.log import getLogger |
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24 |
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25 log = getLogger(__name__) |
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26 from sat.tools.common import regex |
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27 from sat.tools.common import uri |
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28 from sat.tools import stream |
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29 from twisted.internet import defer |
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30 from twisted.words.protocols.jabber import error |
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31 from wokkel import pubsub |
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32 from wokkel import generic |
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33 from functools import partial |
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34 import os |
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35 import os.path |
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36 import mimetypes |
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37 |
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38 |
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39 PLUGIN_INFO = { |
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40 C.PI_NAME: "File sharing component", |
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41 C.PI_IMPORT_NAME: "file_sharing", |
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42 C.PI_MODES: [C.PLUG_MODE_COMPONENT], |
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43 C.PI_TYPE: C.PLUG_TYPE_ENTRY_POINT, |
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44 C.PI_PROTOCOLS: [], |
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45 C.PI_DEPENDENCIES: [ |
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46 "FILE", |
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47 "FILE_SHARING_MANAGEMENT", |
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48 "XEP-0231", |
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49 "XEP-0234", |
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50 "XEP-0260", |
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51 "XEP-0261", |
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52 "XEP-0264", |
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53 "XEP-0329", |
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54 ], |
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55 C.PI_RECOMMENDATIONS: [], |
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56 C.PI_MAIN: "FileSharing", |
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57 C.PI_HANDLER: C.BOOL_TRUE, |
| 3028 | 58 C.PI_DESCRIPTION: _("""Component hosting and sharing files"""), |
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59 } |
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60 |
| 3028 | 61 HASH_ALGO = "sha-256" |
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62 NS_COMMENTS = "org.salut-a-toi.comments" |
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63 COMMENT_NODE_PREFIX = "org.salut-a-toi.file_comments/" |
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64 |
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65 |
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66 class FileSharing(object): |
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67 def __init__(self, host): |
| 3028 | 68 log.info(_("File Sharing initialization")) |
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69 self.host = host |
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70 self._f = host.plugins["FILE"] |
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71 self._jf = host.plugins["XEP-0234"] |
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72 self._h = host.plugins["XEP-0300"] |
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73 self._t = host.plugins["XEP-0264"] |
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74 host.trigger.add("FILE_getDestDir", self._getDestDirTrigger) |
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75 host.trigger.add( |
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76 "XEP-0234_fileSendingRequest", self._fileSendingRequestTrigger, priority=1000 |
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77 ) |
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78 host.trigger.add("XEP-0234_buildFileElement", self._addFileComments) |
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79 host.trigger.add("XEP-0234_parseFileElement", self._getFileComments) |
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80 host.trigger.add("XEP-0329_compGetFilesFromNode", self._addCommentsData) |
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81 self.files_path = host.getLocalPath(None, C.FILES_DIR, profile=False) |
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82 |
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83 def getHandler(self, client): |
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84 return Comments_handler(self) |
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85 |
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86 def profileConnected(self, client): |
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87 path = client.file_tmp_dir = os.path.join( |
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88 self.host.memory.getConfig("", "local_dir"), |
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89 C.FILES_TMP_DIR, |
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90 regex.pathEscape(client.profile), |
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91 ) |
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92 if not os.path.exists(path): |
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93 os.makedirs(path) |
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94 |
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95 @defer.inlineCallbacks |
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96 def _fileTransferedCb(self, __, client, peer_jid, file_data, file_path): |
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97 """post file reception tasks |
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98 |
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99 on file is received, this method create hash/thumbnails if necessary |
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100 move the file to the right location, and create metadata entry in database |
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101 """ |
| 3028 | 102 name = file_data["name"] |
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103 extra = {} |
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104 |
| 3028 | 105 if file_data["hash_algo"] == HASH_ALGO: |
| 106 log.debug(_("Reusing already generated hash")) | |
| 107 file_hash = file_data["hash_hasher"].hexdigest() | |
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108 else: |
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109 hasher = self._h.getHasher(HASH_ALGO) |
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110 with open("file_path") as f: |
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111 file_hash = yield self._h.calculateHash(f, hasher) |
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112 final_path = os.path.join(self.files_path, file_hash) |
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113 |
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114 if os.path.isfile(final_path): |
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115 log.debug( |
| 3028 | 116 "file [{file_hash}] already exists, we can remove temporary one".format( |
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117 file_hash=file_hash |
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118 ) |
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119 ) |
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120 os.unlink(file_path) |
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121 else: |
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122 os.rename(file_path, final_path) |
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123 log.debug( |
| 3028 | 124 "file [{file_hash}] moved to {files_path}".format( |
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125 file_hash=file_hash, files_path=self.files_path |
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126 ) |
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127 ) |
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128 |
| 3028 | 129 mime_type = file_data.get("mime_type") |
| 130 if not mime_type or mime_type == "application/octet-stream": | |
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131 mime_type = mimetypes.guess_type(name)[0] |
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132 |
| 3028 | 133 if mime_type is not None and mime_type.startswith("image"): |
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134 thumbnails = extra.setdefault(C.KEY_THUMBNAILS, []) |
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135 for max_thumb_size in (self._t.SIZE_SMALL, self._t.SIZE_MEDIUM): |
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136 try: |
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137 thumb_size, thumb_id = yield self._t.generateThumbnail( |
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138 final_path, |
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139 max_thumb_size, |
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140 # we keep thumbnails for 6 months |
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141 60 * 60 * 24 * 31 * 6, |
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142 ) |
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143 except Exception as e: |
| 3028 | 144 log.warning(_("Can't create thumbnail: {reason}").format(reason=e)) |
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145 break |
| 3028 | 146 thumbnails.append({"id": thumb_id, "size": thumb_size}) |
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147 |
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148 self.host.memory.setFile( |
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149 client, |
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150 name=name, |
| 3028 | 151 version="", |
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152 file_hash=file_hash, |
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153 hash_algo=HASH_ALGO, |
| 3028 | 154 size=file_data["size"], |
| 155 path=file_data.get("path"), | |
| 156 namespace=file_data.get("namespace"), | |
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157 mime_type=mime_type, |
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158 owner=peer_jid, |
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159 extra=extra, |
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160 ) |
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161 |
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162 def _getDestDirTrigger( |
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163 self, client, peer_jid, transfer_data, file_data, stream_object |
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164 ): |
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165 """This trigger accept file sending request, and store file locally""" |
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166 if not client.is_component: |
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167 return True, None |
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168 assert stream_object |
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169 assert "stream_object" not in transfer_data |
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170 assert C.KEY_PROGRESS_ID in file_data |
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171 filename = file_data["name"] |
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172 assert filename and not "/" in filename |
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173 file_tmp_dir = self.host.getLocalPath( |
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174 client, C.FILES_TMP_DIR, peer_jid.userhost(), component=True, profile=False |
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175 ) |
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176 file_tmp_path = file_data["file_path"] = os.path.join( |
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177 file_tmp_dir, file_data["name"] |
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178 ) |
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179 |
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180 transfer_data["finished_d"].addCallback( |
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181 self._fileTransferedCb, client, peer_jid, file_data, file_tmp_path |
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182 ) |
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183 |
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184 self._f.openFileWrite( |
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185 client, file_tmp_path, transfer_data, file_data, stream_object |
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186 ) |
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187 return False, defer.succeed(True) |
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188 |
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189 @defer.inlineCallbacks |
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190 def _retrieveFiles( |
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191 self, client, session, content_data, content_name, file_data, file_elt |
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192 ): |
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193 """This method retrieve a file on request, and send if after checking permissions""" |
| 3028 | 194 peer_jid = session["peer_jid"] |
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195 try: |
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196 found_files = yield self.host.memory.getFiles( |
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197 client, |
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198 peer_jid=peer_jid, |
| 3028 | 199 name=file_data.get("name"), |
| 200 file_hash=file_data.get("file_hash"), | |
| 201 hash_algo=file_data.get("hash_algo"), | |
| 202 path=file_data.get("path"), | |
| 203 namespace=file_data.get("namespace"), | |
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204 ) |
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205 except exceptions.NotFound: |
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206 found_files = None |
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207 except exceptions.PermissionError: |
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208 log.warning( |
| 3028 | 209 _("{peer_jid} is trying to access an unauthorized file: {name}").format( |
| 210 peer_jid=peer_jid, name=file_data.get("name") | |
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211 ) |
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212 ) |
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213 defer.returnValue(False) |
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214 |
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215 if not found_files: |
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216 log.warning( |
| 3028 | 217 _("no matching file found ({file_data})").format(file_data=file_data) |
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218 ) |
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219 defer.returnValue(False) |
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220 |
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221 # we only use the first found file |
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222 found_file = found_files[0] |
| 3028 | 223 if found_file['type'] != C.FILE_TYPE_FILE: |
| 224 raise TypeError("a file was expected, type is {type_}".format( | |
| 225 type_=found_file['type'])) | |
| 226 file_hash = found_file["file_hash"] | |
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227 file_path = os.path.join(self.files_path, file_hash) |
| 3028 | 228 file_data["hash_hasher"] = hasher = self._h.getHasher(found_file["hash_algo"]) |
| 229 size = file_data["size"] = found_file["size"] | |
| 230 file_data["file_hash"] = file_hash | |
| 231 file_data["hash_algo"] = found_file["hash_algo"] | |
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232 |
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233 # we complete file_elt so peer can have some details on the file |
| 3028 | 234 if "name" not in file_data: |
| 235 file_elt.addElement("name", content=found_file["name"]) | |
| 236 file_elt.addElement("size", content=str(size)) | |
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237 content_data["stream_object"] = stream.FileStreamObject( |
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238 self.host, |
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239 client, |
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240 file_path, |
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241 uid=self._jf.getProgressId(session, content_name), |
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242 size=size, |
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243 data_cb=lambda data: hasher.update(data), |
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244 ) |
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245 defer.returnValue(True) |
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246 |
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247 def _fileSendingRequestTrigger( |
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248 self, client, session, content_data, content_name, file_data, file_elt |
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249 ): |
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250 if not client.is_component: |
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251 return True, None |
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252 else: |
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253 return ( |
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254 False, |
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255 self._retrieveFiles( |
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256 client, session, content_data, content_name, file_data, file_elt |
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257 ), |
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258 ) |
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259 |
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260 ## comments triggers ## |
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261 |
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262 def _addFileComments(self, file_elt, extra_args): |
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263 try: |
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264 comments_url = extra_args.pop("comments_url") |
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265 except KeyError: |
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266 return |
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267 |
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268 comment_elt = file_elt.addElement((NS_COMMENTS, "comments"), content=comments_url) |
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269 |
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270 try: |
| 3028 | 271 count = len(extra_args["extra"]["comments"]) |
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272 except KeyError: |
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273 count = 0 |
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274 |
| 3028 | 275 comment_elt["count"] = str(count) |
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276 return True |
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277 |
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278 def _getFileComments(self, file_elt, file_data): |
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279 try: |
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280 comments_elt = next(file_elt.elements(NS_COMMENTS, "comments")) |
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281 except StopIteration: |
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282 return |
| 3028 | 283 file_data["comments_url"] = str(comments_elt) |
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284 file_data["comments_count"] = comments_elt["count"] |
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285 return True |
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286 |
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287 def _addCommentsData(self, client, iq_elt, owner, node_path, files_data): |
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288 for file_data in files_data: |
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289 file_data["comments_url"] = uri.buildXMPPUri( |
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290 "pubsub", |
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291 path=client.jid.full(), |
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292 node=COMMENT_NODE_PREFIX + file_data["id"], |
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293 ) |
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294 return True |
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295 |
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296 |
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297 class Comments_handler(pubsub.PubSubService): |
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298 """This class is a minimal Pubsub service handling virtual nodes for comments""" |
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299 |
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300 def __init__(self, plugin_parent): |
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301 super(Comments_handler, self).__init__() # PubsubVirtualResource()) |
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302 self.host = plugin_parent.host |
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303 self.plugin_parent = plugin_parent |
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304 self.discoIdentity = { |
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305 "category": "pubsub", |
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306 "type": "virtual", # FIXME: non standard, here to avoid this service being considered as main pubsub one |
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307 "name": "files commenting service", |
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308 } |
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309 |
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310 def _getFileId(self, nodeIdentifier): |
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311 if not nodeIdentifier.startswith(COMMENT_NODE_PREFIX): |
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312 raise error.StanzaError("item-not-found") |
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313 file_id = nodeIdentifier[len(COMMENT_NODE_PREFIX) :] |
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314 if not file_id: |
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315 raise error.StanzaError("item-not-found") |
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316 return file_id |
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317 |
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318 @defer.inlineCallbacks |
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319 def getFileData(self, requestor, nodeIdentifier): |
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320 file_id = self._getFileId(nodeIdentifier) |
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321 try: |
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322 files = yield self.host.memory.getFiles(self.parent, requestor, file_id) |
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323 except (exceptions.NotFound, exceptions.PermissionError): |
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324 # we don't differenciate between NotFound and PermissionError |
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325 # to avoid leaking information on existing files |
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326 raise error.StanzaError("item-not-found") |
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327 if not files: |
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328 raise error.StanzaError("item-not-found") |
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329 if len(files) > 1: |
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330 raise error.InternalError("there should be only one file") |
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331 defer.returnValue(files[0]) |
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332 |
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333 def commentsUpdate(self, extra, new_comments, peer_jid): |
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334 """update comments (replace or insert new_comments) |
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335 |
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336 @param extra(dict): extra data to update |
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337 @param new_comments(list[tuple(unicode, unicode, unicode)]): comments to update or insert |
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338 @param peer_jid(unicode, None): bare jid of the requestor, or None if request is done by owner |
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339 """ |
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340 current_comments = extra.setdefault("comments", []) |
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341 new_comments_by_id = {c[0]: c for c in new_comments} |
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342 updated = [] |
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343 # we now check every current comment, to see if one id in new ones |
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344 # exist, in which case we must update |
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345 for idx, comment in enumerate(current_comments): |
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346 comment_id = comment[0] |
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347 if comment_id in new_comments_by_id: |
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348 # a new comment has an existing id, update is requested |
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349 if peer_jid and comment[1] != peer_jid: |
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350 # requestor has not the right to modify the comment |
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351 raise exceptions.PermissionError |
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352 # we replace old_comment with updated one |
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353 new_comment = new_comments_by_id[comment_id] |
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354 current_comments[idx] = new_comment |
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355 updated.append(new_comment) |
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356 |
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357 # we now remove every updated comments, to only keep |
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358 # the ones to insert |
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|
359 for comment in updated: |
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|
360 new_comments.remove(comment) |
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361 |
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362 current_comments.extend(new_comments) |
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363 |
|
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364 def commentsDelete(self, extra, comments): |
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365 try: |
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366 comments_dict = extra["comments"] |
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367 except KeyError: |
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|
368 return |
|
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|
369 for comment in comments: |
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|
370 try: |
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|
371 comments_dict.remove(comment) |
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372 except ValueError: |
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|
373 continue |
|
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|
374 |
|
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375 def _getFrom(self, item_elt): |
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376 """retrieve published of an item |
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377 |
|
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378 @param item_elt(domish.element): <item> element |
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379 @return (unicode): full jid as string |
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380 """ |
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381 iq_elt = item_elt |
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382 while iq_elt.parent != None: |
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|
383 iq_elt = iq_elt.parent |
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384 return iq_elt["from"] |
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|
385 |
|
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|
386 @defer.inlineCallbacks |
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|
387 def publish(self, requestor, service, nodeIdentifier, items): |
|
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388 # we retrieve file a first time to check authorisations |
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389 file_data = yield self.getFileData(requestor, nodeIdentifier) |
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390 file_id = file_data["id"] |
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391 comments = [(item["id"], self._getFrom(item), item.toXml()) for item in items] |
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392 if requestor.userhostJID() == file_data["owner"]: |
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393 peer_jid = None |
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394 else: |
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395 peer_jid = requestor.userhost() |
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396 update_cb = partial(self.commentsUpdate, new_comments=comments, peer_jid=peer_jid) |
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397 try: |
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398 yield self.host.memory.fileUpdate(file_id, "extra", update_cb) |
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399 except exceptions.PermissionError: |
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400 raise error.StanzaError("not-authorized") |
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401 |
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402 @defer.inlineCallbacks |
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403 def items(self, requestor, service, nodeIdentifier, maxItems, itemIdentifiers): |
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404 file_data = yield self.getFileData(requestor, nodeIdentifier) |
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405 comments = file_data["extra"].get("comments", []) |
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406 if itemIdentifiers: |
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407 defer.returnValue( |
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408 [generic.parseXml(c[2]) for c in comments if c[0] in itemIdentifiers] |
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409 ) |
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410 else: |
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411 defer.returnValue([generic.parseXml(c[2]) for c in comments]) |
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412 |
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413 @defer.inlineCallbacks |
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414 def retract(self, requestor, service, nodeIdentifier, itemIdentifiers): |
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415 file_data = yield self.getFileData(requestor, nodeIdentifier) |
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416 file_id = file_data["id"] |
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417 try: |
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418 comments = file_data["extra"]["comments"] |
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419 except KeyError: |
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420 raise error.StanzaError("item-not-found") |
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421 |
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422 to_remove = [] |
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423 for comment in comments: |
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424 comment_id = comment[0] |
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425 if comment_id in itemIdentifiers: |
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426 to_remove.append(comment) |
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427 itemIdentifiers.remove(comment_id) |
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428 if not itemIdentifiers: |
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429 break |
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430 |
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431 if itemIdentifiers: |
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432 # not all items have been to_remove, we can't continue |
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433 raise error.StanzaError("item-not-found") |
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434 |
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435 if requestor.userhostJID() != file_data["owner"]: |
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436 if not all([c[1] == requestor.userhost() for c in to_remove]): |
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437 raise error.StanzaError("not-authorized") |
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438 |
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439 remove_cb = partial(self.commentsDelete, comments=to_remove) |
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440 yield self.host.memory.fileUpdate(file_id, "extra", remove_cb) |