Mercurial > prosody-modules

annotate mod_pep_vcard_png_avatar/mod_pep_vcard_png_avatar.lua @ 5383:df11a2cbc7b7

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mod_http_oauth2: Implement RFC 7628 Proof Key for Code Exchange Likely to become mandatory in OAuth 2.1. Backwards compatible since the default 'plain' verifier would compare nil with nil if the relevant parameters are left out.
author Kim Alvefur <zash@zash.se>
date Sat, 29 Apr 2023 13:09:46 +0200
parents c22b6283d226
children
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1 -- Prosody IM
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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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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local st = require "util.stanza"
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11 local jid = require "util.jid";
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12 local base64 = require"util.encodings".base64;
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13 local sha1 = require"util.hashes".sha1;
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15 local mm = require "core.modulemanager";
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17 -- COMPAT w/trunk
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18 local pep_module_name = "pep";
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19 if mm.get_modules_for_host then
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20 if mm.get_modules_for_host(module.host):contains("pep_simple") then
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21 pep_module_name = "pep_simple";
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22 end
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23 end
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25 local mod_pep = module:depends(pep_module_name);
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26 local pep_data = mod_pep.module.save().data;
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28 if not pep_data then
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29 module:log("error", "This module is not compatible with your version of mod_pep");
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30 if mm.get_modules_for_host then
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31 module:log("error", "Please use mod_pep_simple instead of mod_pep to continue using this module");
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32 end
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33 return false;
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34 end
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35
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36 module:add_feature("http://prosody.im/protocol/vcard-pep-integration");
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37 module:depends"vcard";
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38 local vcard_storage = module:open_store("vcard");
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39
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40 local function get_vcard(username)
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41 local vcard, err = vcard_storage:get(username);
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42 if vcard then
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43 vcard = st.deserialize(vcard);
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44 end
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45 if not vcard then
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46 vcard = st.stanza("vCard", { xmlns = "vcard-temp" });
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47 end
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48 return vcard, err;
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49 end
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50
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51 local function replace_tag(s, replacement)
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52 local once = false;
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53 s:maptags(function (tag)
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54 if tag.name == replacement.name and tag.attr.xmlns == replacement.attr.xmlns then
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55 if not once then
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56 once = true;
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57 return replacement;
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58 else
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59 return nil;
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60 end
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61 end
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62 return tag;
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63 end);
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64 if not once then
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65 s:add_child(replacement);
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66 end
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67 end
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68
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69 local function set_vcard(username, vcard)
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70 if vcard then
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71 vcard = st.preserialize(st.clone(vcard));
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72 end
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73 return vcard_storage:set(username, vcard);
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74 end
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75
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76 local function publish(session, node, id, item)
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77 return module:fire_event("pep-publish-item", {
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78 actor = true, user = jid.bare(session.full_jid), session = session, node = node, id = id, item = item;
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79 });
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80 end
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81
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82 -- vCard -> PEP
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83 local function update_pep(session, vcard)
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84 if not vcard then return end
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85 local nickname = vcard:get_child_text("NICKNAME");
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86 if nickname then
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87 publish(session, "http://jabber.org/protocol/nick", "current", st.stanza("item", {id="current"})
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88 :tag("nick", { xmlns="http://jabber.org/protocol/nick" }):text(nickname));
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89 end
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90
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91 local photo = vcard:get_child("PHOTO");
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92 if photo then
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93 local photo_type = photo:get_child_text("TYPE");
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94 local photo_b64 = photo:get_child_text("BINVAL");
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95 local photo_raw = photo_b64 and base64.decode(photo_b64);
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96 if photo_raw and photo_type then -- Else invalid data or encoding
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97 local photo_hash = sha1(photo_raw, true);
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98
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99 publish(session, "urn:xmpp:avatar:data", photo_hash, st.stanza("item", {id=photo_hash})
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100 :tag("data", { xmlns="urn:xmpp:avatar:data" }):text(photo_b64));
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101 publish(session, "urn:xmpp:avatar:metadata", photo_hash, st.stanza("item", {id=photo_hash})
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102 :tag("metadata", { xmlns="urn:xmpp:avatar:metadata" })
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103 :tag("info", { id = photo_hash, bytes = tostring(#photo_raw), type = photo_type,}));
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104 end
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105 end
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106 end
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107
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108 local function handle_vcard(event)
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109 local session, stanza = event.origin, event.stanza;
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110 if not stanza.attr.to and stanza.attr.type == "set" then
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111 return update_pep(session, stanza:get_child("vCard", "vcard-temp"));
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112 end
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113 end
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114
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115 module:hook("iq/bare/vcard-temp:vCard", handle_vcard, 1);
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116
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117 -- PEP Avatar -> vCard
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118 local function on_publish_metadata(event)
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119 local username = event.session.username;
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120 local metadata = event.item:find("{urn:xmpp:avatar:metadata}metadata/info");
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121 if not metadata then
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122 module:log("error", "No info found");
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123 module:log("debug", event.item:top_tag());
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124 return;
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125 end
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126 module:log("debug", metadata:top_tag());
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127 local user_data = pep_data[username.."@"..module.host];
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128 local pep_photo = user_data["urn:xmpp:avatar:data"];
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129 pep_photo = pep_photo and pep_photo[1] == metadata.attr.id and pep_photo[2];
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130 if not pep_photo then
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131 module:log("error", "No photo found");
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132 return;
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133 end -- Publishing in the wrong order?
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134 local image=pep_photo:get_child_text("data", "urn:xmpp:avatar:data");
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135 if pep_photo and metadata.attr.type == "image/webp" then
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136 local file_webp = io.open("/tmp/Prosody_temp_avatar.webp", "w");
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137 file_webp:write(base64.decode(pep_photo:get_child_text("data", "urn:xmpp:avatar:data")));
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138 file_webp:close();
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139 os.execute("dwebp /tmp/Prosody_temp_avatar.webp -o /tmp/Prosody_temp_avatar.png");
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140 local file_png = io.open("/tmp/Prosody_temp_avatar.png", "r");
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141 if file_png ~= nil then
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142 image=base64.encode(file_png:read("*a"));
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143 file_png:close();
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144 else
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145 module:log("error", "Couldn't access /tmp/Prosody_temp_avatar.png. Are you sure that /tmp is readable and writable and that Prosody can execute the dwebp command?");
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146 end
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147 os.remove("/tmp/Prosody_temp_avatar.webp");
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148 os.remove("/tmp/Prosody_temp_avatar.png");
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149 end
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150 local vcard = get_vcard(username);
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151 local new_photo = st.stanza("PHOTO", { xmlns = "vcard-temp" })
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152 :tag("TYPE"):text(metadata.attr.type):up()
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153 :tag("BINVAL"):text(image);
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154
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155 replace_tag(vcard, new_photo);
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156 set_vcard(username, vcard);
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157 end
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158
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159 -- PEP Nickname -> vCard
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160 local function on_publish_nick(event)
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161 local username = event.session.username;
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162 local vcard = get_vcard(username);
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163 local new_nick = st.stanza("NICKNAME", { xmlns = "vcard-temp" })
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164 :text(event.item:get_child_text("nick", "http://jabber.org/protocol/nick"));
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165 replace_tag(vcard, new_nick);
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166 set_vcard(username, vcard);
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167 end
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168
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169 local function on_publish(event)
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170 if event.actor == true then return end -- Not from a client
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171 local node = event.node;
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172 if node == "urn:xmpp:avatar:metadata" then
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173 return on_publish_metadata(event);
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174 elseif node == "http://jabber.org/protocol/nick" then
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175 return on_publish_nick(event);
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176 end
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177 end
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178
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179 module:hook("pep-publish-item", on_publish, 1);