Mercurial > prosody-modules
view mod_pep_vcard_png_avatar/mod_pep_vcard_png_avatar.lua @ 3791:34a8f9f996ec
mod_nodeinfo2: Expose XMPP services
author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
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date | Mon, 30 Dec 2019 22:43:01 +0100 |
parents | c22b6283d226 |
children |
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-- Prosody IM -- Copyright (C) 2008-2014 Matthew Wild -- Copyright (C) 2008-2014 Waqas Hussain -- Copyright (C) 2014 Kim Alvefur -- -- This project is MIT/X11 licensed. Please see the -- COPYING file in the source package for more information. -- local st = require "util.stanza" local jid = require "util.jid"; local base64 = require"util.encodings".base64; local sha1 = require"util.hashes".sha1; local mm = require "core.modulemanager"; -- COMPAT w/trunk local pep_module_name = "pep"; if mm.get_modules_for_host then if mm.get_modules_for_host(module.host):contains("pep_simple") then pep_module_name = "pep_simple"; end end local mod_pep = module:depends(pep_module_name); local pep_data = mod_pep.module.save().data; if not pep_data then module:log("error", "This module is not compatible with your version of mod_pep"); if mm.get_modules_for_host then module:log("error", "Please use mod_pep_simple instead of mod_pep to continue using this module"); end return false; end module:add_feature("http://prosody.im/protocol/vcard-pep-integration"); module:depends"vcard"; local vcard_storage = module:open_store("vcard"); local function get_vcard(username) local vcard, err = vcard_storage:get(username); if vcard then vcard = st.deserialize(vcard); end if not vcard then vcard = st.stanza("vCard", { xmlns = "vcard-temp" }); end return vcard, err; end local function replace_tag(s, replacement) local once = false; s:maptags(function (tag) if tag.name == replacement.name and tag.attr.xmlns == replacement.attr.xmlns then if not once then once = true; return replacement; else return nil; end end return tag; end); if not once then s:add_child(replacement); end end local function set_vcard(username, vcard) if vcard then vcard = st.preserialize(st.clone(vcard)); end return vcard_storage:set(username, vcard); end local function publish(session, node, id, item) return module:fire_event("pep-publish-item", { actor = true, user = jid.bare(session.full_jid), session = session, node = node, id = id, item = item; }); end -- vCard -> PEP local function update_pep(session, vcard) if not vcard then return end local nickname = vcard:get_child_text("NICKNAME"); if nickname then publish(session, "http://jabber.org/protocol/nick", "current", st.stanza("item", {id="current"}) :tag("nick", { xmlns="http://jabber.org/protocol/nick" }):text(nickname)); end local photo = vcard:get_child("PHOTO"); if photo then local photo_type = photo:get_child_text("TYPE"); local photo_b64 = photo:get_child_text("BINVAL"); local photo_raw = photo_b64 and base64.decode(photo_b64); if photo_raw and photo_type then -- Else invalid data or encoding local photo_hash = sha1(photo_raw, true); publish(session, "urn:xmpp:avatar:data", photo_hash, st.stanza("item", {id=photo_hash}) :tag("data", { xmlns="urn:xmpp:avatar:data" }):text(photo_b64)); publish(session, "urn:xmpp:avatar:metadata", photo_hash, st.stanza("item", {id=photo_hash}) :tag("metadata", { xmlns="urn:xmpp:avatar:metadata" }) :tag("info", { id = photo_hash, bytes = tostring(#photo_raw), type = photo_type,})); end end end local function handle_vcard(event) local session, stanza = event.origin, event.stanza; if not stanza.attr.to and stanza.attr.type == "set" then return update_pep(session, stanza:get_child("vCard", "vcard-temp")); end end module:hook("iq/bare/vcard-temp:vCard", handle_vcard, 1); -- PEP Avatar -> vCard local function on_publish_metadata(event) local username = event.session.username; local metadata = event.item:find("{urn:xmpp:avatar:metadata}metadata/info"); if not metadata then module:log("error", "No info found"); module:log("debug", event.item:top_tag()); return; end module:log("debug", metadata:top_tag()); local user_data = pep_data[username.."@"..module.host]; local pep_photo = user_data["urn:xmpp:avatar:data"]; pep_photo = pep_photo and pep_photo[1] == metadata.attr.id and pep_photo[2]; if not pep_photo then module:log("error", "No photo found"); return; end -- Publishing in the wrong order? local image=pep_photo:get_child_text("data", "urn:xmpp:avatar:data"); if pep_photo and metadata.attr.type == "image/webp" then local file_webp = io.open("/tmp/Prosody_temp_avatar.webp", "w"); file_webp:write(base64.decode(pep_photo:get_child_text("data", "urn:xmpp:avatar:data"))); file_webp:close(); os.execute("dwebp /tmp/Prosody_temp_avatar.webp -o /tmp/Prosody_temp_avatar.png"); local file_png = io.open("/tmp/Prosody_temp_avatar.png", "r"); if file_png ~= nil then image=base64.encode(file_png:read("*a")); file_png:close(); else 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?"); end os.remove("/tmp/Prosody_temp_avatar.webp"); os.remove("/tmp/Prosody_temp_avatar.png"); end local vcard = get_vcard(username); local new_photo = st.stanza("PHOTO", { xmlns = "vcard-temp" }) :tag("TYPE"):text(metadata.attr.type):up() :tag("BINVAL"):text(image); replace_tag(vcard, new_photo); set_vcard(username, vcard); end -- PEP Nickname -> vCard local function on_publish_nick(event) local username = event.session.username; local vcard = get_vcard(username); local new_nick = st.stanza("NICKNAME", { xmlns = "vcard-temp" }) :text(event.item:get_child_text("nick", "http://jabber.org/protocol/nick")); replace_tag(vcard, new_nick); set_vcard(username, vcard); end local function on_publish(event) if event.actor == true then return end -- Not from a client local node = event.node; if node == "urn:xmpp:avatar:metadata" then return on_publish_metadata(event); elseif node == "http://jabber.org/protocol/nick" then return on_publish_nick(event); end end module:hook("pep-publish-item", on_publish, 1);