Mercurial > libervia-backend

annotate libervia/backend/plugins/plugin_xep_0446.py @ 4118:07370d2a9bde

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plugin XEP-0167: keep media order when starting a call: media content order is relevant when building Jingle contents/SDP notably for bundling. This patch fixes the previous behaviour of always using the same order by keeping the order of the data (i.e. order of original SDP offer). Previous behaviour could lead to call failure. rel 424
author Goffi <goffi@goffi.org>
date Tue, 03 Oct 2023 15:15:24 +0200
parents 4b842c1fb686
children 0d7bb4df2343
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1 #!/usr/bin/env python3
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2
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3 # Copyright (C) 2009-2022 Jérôme Poisson (goffi@goffi.org)
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4
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5 # This program is free software: you can redistribute it and/or modify
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6 # it under the terms of the GNU Affero General Public License as published by
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7 # the Free Software Foundation, either version 3 of the License, or
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8 # (at your option) any later version.
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9
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10 # This program is distributed in the hope that it will be useful,
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11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 # GNU Affero General Public License for more details.
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14
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15 # You should have received a copy of the GNU Affero General Public License
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16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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17
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18 from logging import exception
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19 from typing import Optional, Union, Tuple, Dict, Any
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20 from pathlib import Path
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21
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22 from twisted.words.xish import domish
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23
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24 from libervia.backend.core.constants import Const as C
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25 from libervia.backend.core.i18n import _
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26 from libervia.backend.core.log import getLogger
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27 from libervia.backend.core import exceptions
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28 from libervia.backend.tools import utils
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29
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30 log = getLogger(__name__)
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31
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32
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33 PLUGIN_INFO = {
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34 C.PI_NAME: "File Metadata Element",
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35 C.PI_IMPORT_NAME: "XEP-0446",
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36 C.PI_TYPE: "XEP",
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37 C.PI_MODES: C.PLUG_MODE_BOTH,
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38 C.PI_PROTOCOLS: ["XEP-0446"],
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39 C.PI_DEPENDENCIES: ["XEP-0300"],
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40 C.PI_MAIN: "XEP_0446",
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41 C.PI_HANDLER: "no",
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42 C.PI_DESCRIPTION: _("""Implementation of XEP-0446 (File Metadata Element)"""),
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43 }
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44
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45 NS_FILE_METADATA = "urn:xmpp:file:metadata:0"
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46
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47
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48 class XEP_0446:
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49
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50 def __init__(self, host):
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51 log.info(_("XEP-0446 (File Metadata Element) plugin initialization"))
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52 host.register_namespace("file-metadata", NS_FILE_METADATA)
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53 self._hash = host.plugins["XEP-0300"]
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54
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55 def get_file_metadata_elt(
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56 self,
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57 name: Optional[str] = None,
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58 media_type: Optional[str] = None,
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59 desc: Optional[str] = None,
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60 size: Optional[int] = None,
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61 file_hash: Optional[Tuple[str, str]] = None,
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62 date: Optional[Union[float, int]] = None,
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63 width: Optional[int] = None,
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64 height: Optional[int] = None,
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65 length: Optional[int] = None,
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66 thumbnail: Optional[str] = None,
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67 ) -> domish.Element:
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68 """Generate the element describing a file
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69
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70 @param name: name of the file
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71 @param media_type: media-type
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72 @param desc: description
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73 @param size: size in bytes
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74 @param file_hash: (algo, hash)
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75 @param date: timestamp of the last modification datetime
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76 @param width: image width in pixels
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77 @param height: image height in pixels
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78 @param length: video length in seconds
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79 @param thumbnail: URL to a thumbnail
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80 @return: ``<file/>`` element
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81 """
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82 if name:
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83 name = Path(name).name
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84 file_elt = domish.Element((NS_FILE_METADATA, "file"))
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85 for name, value in (
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86 ("name", name),
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87 ("media-type", media_type),
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88 ("desc", desc),
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89 ("size", size),
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90 ("width", width),
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91 ("height", height),
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92 ("length", length),
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93 ):
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94 if value is not None:
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95 file_elt.addElement(name, content=str(value))
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96 if file_hash is not None:
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97 hash_algo, hash_ = file_hash
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98 file_elt.addChild(self._hash.build_hash_elt(hash_, hash_algo))
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99 if date is not None:
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100 file_elt.addElement("date", utils.xmpp_date(date))
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101 if thumbnail is not None:
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102 # TODO: implement thumbnails
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103 log.warning("thumbnail is not implemented yet")
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104 return file_elt
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105
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106 def parse_file_metadata_elt(
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107 self,
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108 file_metadata_elt: domish.Element
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109 ) -> Dict[str, Any]:
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110 """Parse <file/> element
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111
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112 @param file_metadata_elt: <file/> element
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113 a parent element can also be used
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114 @return: file metadata. It's a dict whose keys correspond to
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115 [get_file_metadata_elt] parameters
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116 @raise exceptions.NotFound: no <file/> element has been found
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117 """
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118
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119 if file_metadata_elt.name != "file":
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120 try:
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121 file_metadata_elt = next(
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122 file_metadata_elt.elements(NS_FILE_METADATA, "file")
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123 )
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124 except StopIteration:
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125 raise exceptions.NotFound
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126 data: Dict[str, Any] = {}
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127
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128 for key, type_ in (
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129 ("name", str),
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130 ("media-type", str),
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131 ("desc", str),
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132 ("size", int),
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133 ("date", "timestamp"),
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134 ("width", int),
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Goffi <goffi@goffi.org>
parents:
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135 ("height", int),
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
136 ("length", int),
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
137 ):
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
138 elt = next(file_metadata_elt.elements(NS_FILE_METADATA, key), None)
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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139 if elt is not None:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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140 if type_ in (str, int):
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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141 content = str(elt)
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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142 if key == "name":
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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143 # we avoid malformed names or names containing path elements
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Goffi <goffi@goffi.org>
parents:
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144 content = Path(content).name
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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145 elif key == "media-type":
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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146 key = "media_type"
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
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147 data[key] = type_(content)
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Goffi <goffi@goffi.org>
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148 elif type == "timestamp":
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Goffi <goffi@goffi.org>
parents:
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149 data[key] = utils.parse_xmpp_date(str(elt))
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Goffi <goffi@goffi.org>
parents:
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150 else:
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Goffi <goffi@goffi.org>
parents:
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151 raise exceptions.InternalError
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Goffi <goffi@goffi.org>
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152
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
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153 try:
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3922
diff changeset
154 algo, hash_ = self._hash.parse_hash_elt(file_metadata_elt)
3896
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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155 except exceptions.NotFound:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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156 pass
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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157 except exceptions.DataError:
4071
4b842c1fb686 refactoring: renamed `sat` package to `libervia.backend`
Goffi <goffi@goffi.org>
parents: 4037
diff changeset
158 from libervia.backend.tools.xml_tools import p_fmt_elt
4037
524856bd7b19 massive refactoring to switch from camelCase to snake_case:
Goffi <goffi@goffi.org>
parents: 3922
diff changeset
159 log.warning("invalid <hash/> element:\n{p_fmt_elt(file_metadata_elt)}")
3896
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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160 else:
3922
0ff265725489 plugin XEP-0447: handle attachment and download:
Goffi <goffi@goffi.org>
parents: 3896
diff changeset
161 data["file_hash"] = (algo, hash_)
3896
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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162
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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163 # TODO: thumbnails
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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164
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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165 return data