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annotate mod_pep_vcard_avatar/mod_pep_vcard_avatar.lua @ 3177:4eff14ac6853

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mod_pep_vcard_avatar: Advertise XEP-0398 feature
author Kim Alvefur <zash@zash.se>
date Thu, 12 Jul 2018 21:00:01 +0200
parents 6f3859233515
children b98c7c33550e
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21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
Kim Alvefur <zash@zash.se>
parents:
diff changeset
1 -- Prosody IM
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Kim Alvefur <zash@zash.se>
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2 -- Copyright (C) 2008-2014 Matthew Wild
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3 -- Copyright (C) 2008-2014 Waqas Hussain
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4 -- Copyright (C) 2014 Kim Alvefur
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933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
5 -- Copyright (c) 2018 Daniel Gultsch
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6 --
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7 -- This project is MIT/X11 licensed. Please see the
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
Kim Alvefur <zash@zash.se>
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8 -- COPYING file in the source package for more information.
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9 --
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10
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11 local st = require "util.stanza"
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12 local jid = require "util.jid";
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13 local base64 = require"util.encodings".base64;
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14 local sha1 = require"util.hashes".sha1;
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15
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16 local mod_pep = module:depends"pep";
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17 local pep_data = mod_pep.module.save().data;
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18
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4eff14ac6853 mod_pep_vcard_avatar: Advertise XEP-0398 feature
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19 module:hook("account-disco-info", function (event)
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20 event.reply:tag("feature", { var = "urn:xmpp:pep-vcard-conversion:0" }):up();
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21 end);
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22
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23 module:depends"vcard";
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24 local vcard_storage = module:open_store("vcard");
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25
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26 local function get_vcard(username)
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27 local vcard, err = vcard_storage:get(username);
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28 if vcard then
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29 vcard = st.deserialize(vcard);
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30 end
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31 if not vcard then
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32 vcard = st.stanza("vCard", { xmlns = "vcard-temp" });
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33 end
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34 return vcard, err;
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35 end
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36
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37 local function replace_tag(s, replacement)
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38 local once = false;
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39 s:maptags(function (tag)
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40 if tag.name == replacement.name and tag.attr.xmlns == replacement.attr.xmlns then
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41 if not once then
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42 once = true;
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43 return replacement;
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44 else
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45 return nil;
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46 end
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47 end
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48 return tag;
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49 end);
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50 if not once then
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51 s:add_child(replacement);
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52 end
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53 end
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54
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55 local function set_vcard(username, vcard)
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56 if vcard then
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57 vcard = st.preserialize(st.clone(vcard));
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58 end
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59 return vcard_storage:set(username, vcard);
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60 end
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61
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62 local function publish(session, node, id, item)
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
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63 return module:fire_event("pep-publish-item", {
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64 actor = true, user = jid.bare(session.full_jid), session = session, node = node, id = id, item = item;
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65 });
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66 end
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67
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68 -- vCard -> PEP
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69 local function update_pep(session, vcard)
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70 if not vcard then return end
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71 local nickname = vcard:get_child_text("NICKNAME");
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72 if nickname then
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73 publish(session, "http://jabber.org/protocol/nick", "current", st.stanza("item", {id="current"})
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74 :tag("nick", { xmlns="http://jabber.org/protocol/nick" }):text(nickname));
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75 end
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76
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77 local photo = vcard:get_child("PHOTO");
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78 if photo then
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79 local photo_type = photo:get_child_text("TYPE");
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80 local photo_b64 = photo:get_child_text("BINVAL");
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81 local photo_raw = photo_b64 and base64.decode(photo_b64);
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82 if photo_raw and photo_type then -- Else invalid data or encoding
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83 local photo_hash = sha1(photo_raw, true);
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84
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85 publish(session, "urn:xmpp:avatar:data", photo_hash, st.stanza("item", {id=photo_hash})
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86 :tag("data", { xmlns="urn:xmpp:avatar:data" }):text(photo_b64));
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
Kim Alvefur <zash@zash.se>
parents:
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87 publish(session, "urn:xmpp:avatar:metadata", photo_hash, st.stanza("item", {id=photo_hash})
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88 :tag("metadata", { xmlns="urn:xmpp:avatar:metadata" })
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
Kim Alvefur <zash@zash.se>
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89 :tag("info", { id = photo_hash, bytes = tostring(#photo_raw), type = photo_type,}));
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Kim Alvefur <zash@zash.se>
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90 end
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91 end
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92 end
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93
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Kim Alvefur <zash@zash.se>
parents:
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94 local function handle_vcard(event)
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parents:
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95 local session, stanza = event.origin, event.stanza;
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
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96 if not stanza.attr.to and stanza.attr.type == "set" then
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Kim Alvefur <zash@zash.se>
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97 return update_pep(session, stanza:get_child("vCard", "vcard-temp"));
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98 end
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99 end
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100
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101 module:hook("iq/bare/vcard-temp:vCard", handle_vcard, 1);
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102
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103 -- PEP Avatar -> vCard
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Kim Alvefur <zash@zash.se>
parents:
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104 local function on_publish_metadata(event)
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105 local username = event.session.username;
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106 local metadata = event.item:find("{urn:xmpp:avatar:metadata}metadata/info");
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Kim Alvefur <zash@zash.se>
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107 if not metadata then
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108 module:log("error", "No info found");
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109 module:log("debug", event.item:top_tag());
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110 return;
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Kim Alvefur <zash@zash.se>
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111 end
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112 module:log("debug", metadata:top_tag());
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
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113 local user_data = pep_data[username.."@"..module.host];
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Kim Alvefur <zash@zash.se>
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114 local pep_photo = user_data["urn:xmpp:avatar:data"];
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
Kim Alvefur <zash@zash.se>
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115 pep_photo = pep_photo and pep_photo[1] == metadata.attr.id and pep_photo[2];
21e439ca7208 mod_pep_vcard_avatar: Syncs avatars between PEP and vCard
Kim Alvefur <zash@zash.se>
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116 if not pep_photo then
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Kim Alvefur <zash@zash.se>
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117 module:log("error", "No photo found");
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118 return;
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119 end -- Publishing in the wrong order?
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120 local vcard = get_vcard(username);
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121 local new_photo = st.stanza("PHOTO", { xmlns = "vcard-temp" })
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96aca307964b mod_pep_vcard_avatar: Fix typo [luacheck]
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122 :tag("TYPE"):text(metadata.attr.type):up()
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123 :tag("BINVAL"):text(pep_photo:get_child_text("data", "urn:xmpp:avatar:data"));
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124
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125 replace_tag(vcard, new_photo);
1591
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126 set_vcard(username, vcard);
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127 end
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128
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129 -- PEP Nickname -> vCard
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130 local function on_publish_nick(event)
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131 local username = event.session.username;
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132 local vcard = get_vcard(username);
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133 local new_nick = st.stanza("NICKNAME", { xmlns = "vcard-temp" })
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134 :text(event.item:get_child_text("nick", "http://jabber.org/protocol/nick"));
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135 replace_tag(vcard, new_nick);
1591
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136 set_vcard(username, vcard);
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137 end
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parents:
diff changeset
138
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139 local function on_publish(event)
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140 if event.actor == true then return end -- Not from a client
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141 local node = event.node;
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142 if node == "urn:xmpp:avatar:metadata" then
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143 return on_publish_metadata(event);
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144 elseif node == "http://jabber.org/protocol/nick" then
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145 return on_publish_nick(event);
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146 end
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Kim Alvefur <zash@zash.se>
parents:
diff changeset
147 end
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148
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149 module:hook("pep-publish-item", on_publish, 1);
2862
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parents: 2206
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150
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151 local function calculate_avatar_hash(username)
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152 local vcard = get_vcard(username)
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153 local photo = vcard and vcard:get_child("PHOTO")
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154 if photo then
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155 local photo_type = photo:get_child_text("TYPE");
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156 local photo_b64 = photo:get_child_text("BINVAL");
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157 local photo_raw = photo_b64 and base64.decode(photo_b64);
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158 if photo_raw and photo_type then
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159 return sha1(photo_raw, true);
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160 end
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parents: 2206
diff changeset
161 end
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162 return ""
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parents: 2206
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163 end
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parents: 2206
diff changeset
164
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diff changeset
165 local function get_avatar_hash(username, host)
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diff changeset
166 local session = prosody.hosts[host] and prosody.hosts[host].sessions[username]
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parents: 2206
diff changeset
167 if not session then
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parents: 2206
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168 return nil
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parents: 2206
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169 end
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parents: 2206
diff changeset
170 if not session.avatar_hash then
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diff changeset
171 session.avatar_hash = calculate_avatar_hash(username)
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parents: 2206
diff changeset
172 end
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parents: 2206
diff changeset
173 return session.avatar_hash
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parents: 2206
diff changeset
174 end
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parents: 2206
diff changeset
175
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
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parents: 2206
diff changeset
176 local function on_send_presence(event)
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177 local stanza, session = event.stanza, event.origin
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diff changeset
178 if stanza.attr.type then
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parents: 2206
diff changeset
179 return
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Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
180 end
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
181 local hash = get_avatar_hash(session.username, session.host)
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
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parents: 2206
diff changeset
182 if hash and hash ~= "" then
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
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parents: 2206
diff changeset
183 local x_vcard_update = stanza:get_child("x","vcard-temp:x:update")
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
184 if not x_vcard_update then
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
185 x_vcard_update = st.stanza("x",{xmlns="vcard-temp:x:update"})
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
186 stanza:add_child(x_vcard_update)
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
187 end
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
188 local photo = x_vcard_update:get_child("photo")
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
189 if not photo then
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
190 photo = st.stanza("photo")
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
191 photo:text(hash)
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
192 x_vcard_update:add_child(photo)
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
193 end
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
194 end
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
195 end
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
196
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
197 module:hook("pre-presence/full", on_send_presence)
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
198 module:hook("pre-presence/bare", on_send_presence)
933049a60ce6 mod_pep_vcard_avatar: annouce avatar hash in presence if client does not
Daniel Gultsch <daniel@gultsch.de>
parents: 2206
diff changeset
199 module:hook("pre-presence/host", on_send_presence)