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annotate sat/tools/common/uri.py @ 3661:cbb988a6f507

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author Goffi <goffi@goffi.org>
date Wed, 08 Sep 2021 11:20:37 +0200
parents cc3b453670a2
children 67fc066ed2cd
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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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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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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 import sys
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23 import urllib.parse
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24 import urllib.request, urllib.parse, urllib.error
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26 # FIXME: basic implementation, need to follow RFC 5122
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29 def parseXMPPUri(uri):
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30 """Parse an XMPP uri and return a dict with various information
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31
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32 @param uri(unicode): uri to parse
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33 @return dict(unicode, unicode): data depending of the URI where key can be:
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34 type: one of ("pubsub", TODO)
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35 type is always present
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36 sub_type: can be:
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37 - microblog
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38 only used for pubsub for now
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39 path: XMPP path (jid of the service or entity)
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40 node: node used
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41 id: id of the element (item for pubsub)
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42 @raise ValueError: the scheme is not xmpp
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43 """
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44 uri_split = urllib.parse.urlsplit(uri)
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45 if uri_split.scheme != "xmpp":
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46 raise ValueError("this is not a XMPP URI")
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47
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48 # XXX: we don't use jid.JID for path as it can be used both in backend and frontend
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49 # which may use different JID classes
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50 data = {"path": urllib.parse.unquote(uri_split.path)}
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51
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52 query_end = uri_split.query.find(";")
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53 query_type = uri_split.query[:query_end]
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54 if query_end == -1 or "=" in query_type:
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55 raise ValueError("no query type, invalid XMPP URI")
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56
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57 if sys.version_info >= (3, 9):
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58 # parse_qs behaviour has been modified in Python 3.9, ";" is not understood as a
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59 # parameter separator anymore but the "separator" argument has been added to
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60 # change it.
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61 pairs = urllib.parse.parse_qs(uri_split.geturl(), separator=";")
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62 else:
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63 pairs = urllib.parse.parse_qs(uri_split.geturl())
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64 for k, v in list(pairs.items()):
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65 if len(v) != 1:
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66 raise NotImplementedError("multiple values not managed")
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67 if k in ("path", "type", "sub_type"):
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68 raise NotImplementedError("reserved key used in URI, this is not supported")
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69 data[k] = urllib.parse.unquote(v[0])
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71 if query_type:
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72 data["type"] = query_type
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73 elif "node" in data:
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74 data["type"] = "pubsub"
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75 else:
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76 data["type"] = ""
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77
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78 if "node" in data:
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79 if data["node"].startswith("urn:xmpp:microblog:"):
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80 data["sub_type"] = "microblog"
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81
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82 return data
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83
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84
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85 def addPairs(uri, pairs):
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86 for k, v in pairs.items():
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87 uri.append(
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88 ";"
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89 + urllib.parse.quote_plus(k.encode("utf-8"))
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90 + "="
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91 + urllib.parse.quote_plus(v.encode("utf-8"))
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92 )
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93
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94
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95 def buildXMPPUri(type_, **kwargs):
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96 uri = ["xmpp:"]
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97 subtype = kwargs.pop("subtype", None)
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98 path = kwargs.pop("path")
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99 uri.append(urllib.parse.quote_plus(path.encode("utf-8")).replace("%40", "@"))
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100
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101 if type_ == "pubsub":
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102 if subtype == "microblog" and not kwargs.get("node"):
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103 kwargs["node"] = "urn:xmpp:microblog:0"
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104 if kwargs:
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105 uri.append("?")
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106 addPairs(uri, kwargs)
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107 else:
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108 raise NotImplementedError("{type_} URI are not handled yet".format(type_=type_))
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109
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110 return "".join(uri)