1AnyEvent::XMPP::Ext::VCUasredr(3C)ontributed Perl DocumeAnntyaEtvieonnt::XMPP::Ext::VCard(3)
2
6 AnyEvent::XMPP::Ext::VCard - VCards (XEP-0054 & XEP-0084)
7
9 use AnyEvent::XMPP::Ext::VCard;
10 my $vcard = AnyEvent::XMPP::Ext::VCard->new;
12 $con->reg_cb (
13 stream_ready => sub { $vcard->hook_on ($con) }
14 );
15 $vcard->retrieve ($con, 'elmex@jabber.org', sub {
17 my ($jid, $vcard, $error) = @_;
18 if ($error) {
20 warn "couldn't get vcard for elmex@jabber.org: " . $error->string . "\n";
21 } else {
22 print "vCard nick for elmex@jabber.org: ".$vcard->{NICKNAME}."\n";
23 print "Avatar hash for elmex@jabber.org: ".$vcard->{_avatar_hash}."\n";
24 }
25 });
26 $vcard->store ($con, undef, { NICKNAME => 'net-xmpp2' }, sub {
28 my ($error) = @_;
29 if ($error) {
30 warn "upload failed: " . $error->string . "\n";
31 } else {
32 print "upload successful\n";
33 }
34 });
35 $disco->enable_feature ($vcard->disco_feature);
37
39 This extension handles setting and retrieval of the VCard and the VCard
40 based avatars.
41 For example see the test suite of AnyEvent::XMPP.
43
45 new (%args)
46 Creates a new vcard extension. It can take a "cache" argument,
47 which should be a tied hash which should be able to save the
48 retrieved vcards. If no "cache" is set a internal hash will be
49 used and the vcards will be retrieved everytime the program is
50 restarted. The keys will be the stringprepped bare JIDs of the
51 people we got a vcard from and the value will be a non-cyclic
52 hash/array datastructure representing the vcard.
53 About this datastructure see below at VCARD STRUCTURE.
55 If you want to support avatars correctly make sure you hook up the
57 connection via the "hook_on" method.
58 hook_on ($con, $dont_retrieve_vcard)
60 $con must be an object of the class AnyEvent::XMPP::Connection (or
61 derived). Once the vCard extension has been hooked up on a
62 connection it will add the avatar information to all outgoing
63 presence stanzas.
64 IMPORTANT: You need to hook on the connection BEFORE it was
66 connected. The initial presence stanza needs to contain the
67 information that we support avatars. The vcard will automatically
68 retrieved if the session wasn't already started. Otherwise you will
69 have to retrieve the vcard manually if you hook it up after the
70 "session_ready" event was received. You can prevent the automatic
71 retrieval by giving a true value in $dont_retrieve_vcard. However,
72 just make sure to hook up on any connection before it is connected
73 if you want to offer avatar support on it.
74 Best is probably to do it like this:
76 my $vcard = AnyEvent::XMPP::Ext::VCard->new;
78 $con->reg_cb (
79 stream_ready => sub { $vcard->hook_on ($con) }
80 );
81 my_vcard ($con)
83 This method returns the vcard for the account connected by $con.
84 This only works if vcard was (successfully) retrieved. If the
85 connection was hoooked up the vcard was automatically retrieved.
86 Alternatively $con can also be a string reprensenting the JID of an
88 account.
89 cache ([$newcache])
91 See also "new" about the meaning of cache hashes. If no argument
92 is given the current cache is returned.
93 store ($con, $vcard, $cb)
95 This method will store your $vcard on the connected server. $cb is
96 called when either an error occured or the storage was successful.
97 If an error occured the first argument is not undefined and
98 contains an AnyEvent::XMPP::Error::IQ object.
99 $con should be a AnyEvent::XMPP::Connection or an object from some
101 derived class.
102 $vcard has a datastructure as described below in VCARD STRUCTURE.
104 retrieve ($con, $jid, $cb)
106 This method will retrieve the vCard for $jid via the connection
107 $con. If $jid is undefined the vCard of yourself is retrieved.
108 The callback $cb is called when an error occured or the vcard was
109 retrieved. The first argument of the callback will be the JID to
110 which the vCard belongs, the second argument is the vCard itself
111 (as described in VCARD STRUCTURE below) and the thrid argument is
112 the error, if an error occured (undef otherwise).
113
115 As there are currently no nice DOM implementations in Perl and I
116 strongly dislike the DOM API in general this module has a simple Perl
117 datastructure without cycles to represent the vCard.
118 First an example: A fetched vCard hash may look like this:
120 {
122 'URL' => ['http://www.ta-sa.org/'],
123 'ORG' => [{
124 'ORGNAME' => 'nethype GmbH'
125 }],
126 'N' => [{
127 'FAMILY' => 'Redeker'
128 }],
129 'EMAIL' => ['elmex@ta-sa.org'],
130 'BDAY' => ['1984-06-01'],
131 'FN' => ['Robin'],
132 'ADR' => [
133 {
134 HOME => undef,
135 'COUNTRY' => 'Germany'
136 },
137 {
138 WORK => undef,
139 COUNTRY => 'Germany',
140 LOCALITY => 'Karlsruhe'
141 }
142 ],
143 'NICKNAME' => ['elmex'],
144 'ROLE' => ['Programmer']
145 }
146 The keys represent the toplevel element of a vCard, the values are
148 always array references containig one or more values for the key. If
149 the value is a hash reference again it's value will not be an array
150 reference but either undef or plain values.
151 The values of the toplevel keys are all array references because fields
153 like "ADR" may occur multiple times.
154 Consult XEP-0054 for an explanation what these fields mean or contain.
156 There are special fields in this structure for handling avatars:
158 "_avatar" contains the binary data for the avatar image.
159 "_avatar_hash" contains the sha1 hexencoded hash of the binary image
160 data. "_avatar_type" contains the mime type of the avatar.
161 If you want to store the vcard you only have to set "_avatar" and
163 "_avatar_type" if you want to store an avatar.
164
166 The vcard extension will emit these events:
167
169 Implement caching, the cache stuff is just a storage hash at the
170 moment. Or maybe drop it completly and let the application handle
171 caching.
172 retrieve_vcard_error => $iq_error
174 When a vCard retrieval was not successful, this event is emitted.
175 This is neccessary as some retrievals may happen automatically.
176 vcard => $jid, $vcard
178 Whenever a vCard is retrieved, either automatically or manually,
179 this event is emitted with the retrieved vCard.
180
182 Robin Redeker, "<elmex at ta-sa.org>", JID: "<elmex at jabber.org>"
183
185 Copyright 2007, 2008 Robin Redeker, all rights reserved.
186 This program is free software; you can redistribute it and/or modify it
188 under the same terms as Perl itself.
189perl v5.34.0 2021-07-22 AnyEvent::XMPP::Ext::VCard(3)