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annotate libervia/backend/tools/common/uri.py @ 4094:c3b68fdc2de7

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component AP gateway: fix handling of XMPP comments authors: the gateway was supposing that comments where emitted from PEP of author. While this is the case for most blog posts, it's not for comments. Instead the component is now using `author_jid` which is retrieved by XEP-0277 plugin, and reject the item if the auhor is not verified (i.e. if `publisher` attribute is not set by XMPP service).
author Goffi <goffi@goffi.org>
date Mon, 12 Jun 2023 14:50:43 +0200
parents 4b842c1fb686
children
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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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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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 """ XMPP uri parsing tools """
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21
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22 from typing import Optional
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23 import sys
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24 import urllib.parse
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25 import urllib.request, urllib.parse, urllib.error
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27 # FIXME: basic implementation, need to follow RFC 5122
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29
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30 def parse_xmpp_uri(uri):
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31 """Parse an XMPP uri and return a dict with various information
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32
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33 @param uri(unicode): uri to parse
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34 @return dict(unicode, unicode): data depending of the URI where key can be:
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35 type: one of ("pubsub", TODO)
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36 type is always present
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37 sub_type: can be:
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38 - microblog
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39 only used for pubsub for now
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40 path: XMPP path (jid of the service or entity)
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41 node: node used
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42 id: id of the element (item for pubsub)
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43 @raise ValueError: the scheme is not xmpp
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44 """
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45 uri_split = urllib.parse.urlsplit(uri)
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46 if uri_split.scheme != "xmpp":
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47 raise ValueError("this is not a XMPP URI")
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48
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49 # XXX: we don't use jid.JID for path as it can be used both in backend and frontend
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50 # which may use different JID classes
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51 data = {"path": urllib.parse.unquote(uri_split.path)}
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52
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53 query_end = uri_split.query.find(";")
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54 if query_end == -1:
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55 # we just have a JID
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56 query_type = None
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57 else:
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58 query_type = uri_split.query[:query_end]
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59 if "=" in query_type:
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60 raise ValueError("no query type, invalid XMPP URI")
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62 if sys.version_info >= (3, 9):
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63 # parse_qs behaviour has been modified in Python 3.9, ";" is not understood as a
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64 # parameter separator anymore but the "separator" argument has been added to
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65 # change it.
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66 pairs = urllib.parse.parse_qs(uri_split.geturl(), separator=";")
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67 else:
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68 pairs = urllib.parse.parse_qs(uri_split.geturl())
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69 for k, v in list(pairs.items()):
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70 if len(v) != 1:
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71 raise NotImplementedError("multiple values not managed")
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72 if k in ("path", "type", "sub_type"):
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73 raise NotImplementedError("reserved key used in URI, this is not supported")
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74 data[k] = urllib.parse.unquote(v[0])
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75
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76 if query_type:
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77 data["type"] = query_type
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78 elif "node" in data:
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79 data["type"] = "pubsub"
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80 else:
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81 data["type"] = ""
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82
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83 if "node" in data:
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84 if data["node"].startswith("urn:xmpp:microblog:"):
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85 data["sub_type"] = "microblog"
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86
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87 return data
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89
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90 def add_pairs(uri, pairs):
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91 for k, v in pairs.items():
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92 uri.append(
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93 ";"
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94 + urllib.parse.quote_plus(k.encode("utf-8"))
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95 + "="
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96 + urllib.parse.quote_plus(v.encode("utf-8"))
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97 )
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98
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99
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100 def build_xmpp_uri(type_: Optional[str] = None, **kwargs: str) -> str:
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101 uri = ["xmpp:"]
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102 subtype = kwargs.pop("subtype", None)
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103 path = kwargs.pop("path")
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104 uri.append(urllib.parse.quote_plus(path.encode("utf-8")).replace("%40", "@"))
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105
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106 if type_ is None:
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107 # we have an URI to a JID
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108 if kwargs:
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109 raise NotImplementedError(
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110 "keyword arguments are not supported for URI without type"
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111 )
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112 elif type_ == "pubsub":
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113 if subtype == "microblog" and not kwargs.get("node"):
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114 kwargs["node"] = "urn:xmpp:microblog:0"
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115 if kwargs:
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116 uri.append("?")
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117 add_pairs(uri, kwargs)
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118 else:
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119 raise NotImplementedError("{type_} URI are not handled yet".format(type_=type_))
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120
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121 return "".join(uri)