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annotate sat/plugins/plugin_xep_0446.py @ 4002:5245b675f7ad

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plugin XEP-0313: don't wait for MAM to be retrieved in connection workflow: MAM retrieval can be long, and can be done after connection, message just need to be sorted when being inserted (i.e. frontends must do insort). To avoid blocking connection for too long and result in bad UX and timeout risk, one2one MAM message are not retrieved in background.
author Goffi <goffi@goffi.org>
date Fri, 10 Mar 2023 17:22:45 +0100
parents 0ff265725489
children 524856bd7b19
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dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
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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 sat.core.constants import Const as C
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25 from sat.core.i18n import _
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26 from sat.core.log import getLogger
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27 from sat.core import exceptions
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28 from sat.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.registerNamespace("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.buildHashElt(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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135 ("height", int),
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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:
diff changeset
139 if elt is not None:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
140 if type_ in (str, int):
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
141 content = str(elt)
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
142 if key == "name":
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
143 # we avoid malformed names or names containing path elements
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
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:
diff changeset
145 elif key == "media-type":
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
146 key = "media_type"
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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147 data[key] = type_(content)
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
148 elif type == "timestamp":
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
149 data[key] = utils.parse_xmpp_date(str(elt))
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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150 else:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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151 raise exceptions.InternalError
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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152
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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153 try:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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154 algo, hash_ = self._hash.parseHashElt(file_metadata_elt)
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
155 except exceptions.NotFound:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
156 pass
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
157 except exceptions.DataError:
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
158 from sat.tools.xml_tools import pFmtElt
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
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159 log.warning("invalid <hash/> element:\n{pFmtElt(file_metadata_elt)}")
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
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:
diff changeset
162
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
163 # TODO: thumbnails
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
164
dbf0c7faaf49 plugin XEP-0446: File Metadata implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
165 return data