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annotate sat/tools/common/uri.py @ 3019:c9f03b1eb64d

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plugin XEP-0198: catch and log an error if buffer is unexpectedly empty
author Goffi <goffi@goffi.org>
date Sat, 20 Jul 2019 20:55:17 +0200
parents 003b8b4b56a7
children ab2696e34d29
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7e06eafef409 tools(common/uri): XMPP uri parsing module, first draft
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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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 """ XMPP uri parsing tools """
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21
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22 import urlparse
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23 import urllib
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24
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25 # FIXME: basic implementation, need to follow RFC 5122
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26
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27
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28 def parseXMPPUri(uri):
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29 """Parse an XMPP uri and return a dict with various information
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30
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31 @param uri(unicode): uri to parse
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32 @return dict(unicode, unicode): data depending of the URI where key can be:
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33 type: one of ("pubsub", TODO)
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34 type is always present
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35 sub_type: can be:
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36 - microblog
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37 only used for pubsub for now
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38 path: XMPP path (jid of the service or entity)
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39 node: node used
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40 id: id of the element (item for pubsub)
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41 @raise ValueError: the scheme is not xmpp
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42 """
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43 uri_split = urlparse.urlsplit(uri.encode("utf-8"))
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44 if uri_split.scheme != "xmpp":
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45 raise ValueError(u"this is not a XMPP URI")
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46
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47 # XXX: we don't use jid.JID for path as it can be used both in backend and frontend
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48 # which may use different JID classes
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49 data = {u"path": urllib.unquote(uri_split.path).decode("utf-8")}
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50
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51 query_end = uri_split.query.find(";")
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52 query_type = uri_split.query[:query_end]
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53 if query_end == -1 or "=" in query_type:
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54 raise ValueError("no query type, invalid XMPP URI")
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55
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56 pairs = urlparse.parse_qs(uri_split.geturl())
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57 for k, v in pairs.items():
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58 if len(v) != 1:
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59 raise NotImplementedError(u"multiple values not managed")
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60 if k in ("path", "type", "sub_type"):
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61 raise NotImplementedError(u"reserved key used in URI, this is not supported")
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62 data[k.decode("utf-8")] = urllib.unquote(v[0]).decode("utf-8")
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63
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64 if query_type:
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65 data[u"type"] = query_type.decode("utf-8")
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66 elif u"node" in data:
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67 data[u"type"] = u"pubsub"
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68 else:
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69 data[u"type"] = ""
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70
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71 if u"node" in data:
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72 if data[u"node"].startswith(u"urn:xmpp:microblog:"):
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73 data[u"sub_type"] = "microblog"
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74
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75 return data
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76
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77
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78 def addPairs(uri, pairs):
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79 for k, v in pairs.iteritems():
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80 uri.append(
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81 u";"
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82 + urllib.quote_plus(k.encode("utf-8"))
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83 + u"="
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84 + urllib.quote_plus(v.encode("utf-8"))
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85 )
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86
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87
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88 def buildXMPPUri(type_, **kwargs):
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89 uri = [u"xmpp:"]
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90 subtype = kwargs.pop("subtype", None)
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91 path = kwargs.pop("path")
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92 uri.append(urllib.quote_plus(path.encode("utf-8")).replace(u"%40", "@"))
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93
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94 if type_ == u"pubsub":
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95 if subtype == "microblog" and not kwargs.get("node"):
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96 kwargs[u"node"] = "urn:xmpp:microblog:0"
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97 if kwargs:
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98 uri.append(u"?")
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99 addPairs(uri, kwargs)
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100 else:
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101 raise NotImplementedError(u"{type_} URI are not handled yet".format(type_=type_))
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102
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103 return u"".join(uri)