Software /
code /
prosody
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plugins/storage/xep227store.lib.lua @ 2678:c5882e2e12b5
mod_storage, plus a bit of SQL and XML.
author | Waqas Hussain <waqas20@gmail.com> |
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date | Fri, 19 Feb 2010 22:32:28 +0500 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/plugins/storage/xep227store.lib.lua Fri Feb 19 22:32:28 2010 +0500 @@ -0,0 +1,168 @@ + +local st = require "util.stanza"; + +local function getXml(user, host) + local jid = user.."@"..host; + local path = "data/"..jid..".xml"; + local f = io.open(path); + if not f then return; end + local s = f:read("*a"); + return parse_xml_real(s); +end +local function setXml(user, host, xml) + local jid = user.."@"..host; + local path = "data/"..jid..".xml"; + if xml then + local f = io.open(path, "w"); + if not f then return; end + local s = tostring(xml); + f:write(s); + f:close(); + return true; + else + return os.remove(path); + end +end +local function getUserElement(xml) + if xml and xml.name == "server-data" then + local host = xml.tags[1]; + if host and host.name == "host" then + local user = host.tags[1]; + if user and user.name == "user" then + return user; + end + end + end +end +local function createOuterXml(user, host) + return st.stanza("server-data", {xmlns='http://www.xmpp.org/extensions/xep-0227.html#ns'}) + :tag("host", {jid=host}) + :tag("user", {name = user}); +end +local function removeFromArray(array, value) + for i,item in ipairs(array) do + if item == value then + table.remove(array, i); + return; + end + end +end +local function removeStanzaChild(s, child) + removeFromArray(s.tags, child); + removeFromArray(s, child); +end + +local handlers = {}; + +handlers.accounts = { + get = function(self, user) + local user = getUserElement(getXml(user, self.host)); + if user and user.attr.password then + return { password = user.attr.password }; + end + end; + set = function(self, user, data) + if data and data.password then + local xml = getXml(user, self.host); + if not xml then xml = createOuterXml(user, self.host); end + local usere = getUserElement(xml); + usere.attr.password = data.password; + return setXml(user, self.host, xml); + else + return setXml(user, self.host, nil); + end + end; +}; +handlers.vcard = { + get = function(self, user) + local user = getUserElement(getXml(user, self.host)); + if user then + local vcard = user:get_child("vCard", 'vcard-temp'); + if vcard then + return st.preserialize(vcard); + end + end + end; + set = function(self, user, data) + local xml = getXml(user, self.host); + local usere = xml and getUserElement(xml); + if usere then + local vcard = usere:get_child("vCard", 'vcard-temp'); + if vcard then + removeStanzaChild(usere, vcard); + elseif not data then + return true; + end + if data then + vcard = st.deserialize(data); + usere:add_child(vcard); + end + return setXml(user, self.host, xml); + end + return true; + end; +}; +handlers.private = { + get = function(self, user) + local user = getUserElement(getXml(user, self.host)); + if user then + local private = user:get_child("query", "jabber:iq:private"); + if private then + local r = {}; + for _, tag in ipairs(private.tags) do + r[tag.name..":"..tag.attr.xmlns] = st.preserialize(tag); + end + return r; + end + end + end; + set = function(self, user, data) + local xml = getXml(user, self.host); + local usere = xml and getUserElement(xml); + if usere then + local private = usere:get_child("query", 'jabber:iq:private'); + if private then removeStanzaChild(usere, private); end + if data and next(data) ~= nil then + private = st.stanza("query", {xmlns='jabber:iq:private'}); + for _,tag in pairs(data) do + private:add_child(st.deserialize(tag)); + end + usere:add_child(private); + end + return setXml(user, self.host, xml); + end + return true; + end; +}; + +----------------------------- +local driver = {}; +driver.__index = driver; + +function driver:open(host, datastore, typ) + local cache_key = host.." "..datastore; + if self.ds_cache[cache_key] then return self.ds_cache[cache_key]; end + local instance = setmetatable({}, self); + instance.host = host; + instance.datastore = datastore; + local handler = handlers[datastore]; + if not handler then return nil; end + for key,val in pairs(handler) do + instance[key] = val; + end + if instance.init then instance:init(); end + self.ds_cache[cache_key] = instance; + return instance; +end + +----------------------------- +local _M = {}; + +function _M.new() + local instance = setmetatable({}, driver); + instance.__index = instance; + instance.ds_cache = {}; + return instance; +end + +return _M;