| 1 | local st = require "util.stanza"; |
| 2 | |
| 3 | local function getXml(user, host) |
| 4 | local jid = user.."@"..host; |
| 5 | local path = "data/"..jid..".xml"; |
| 6 | local f = io.open(path); |
| 7 | if not f then return; end |
| 8 | local s = f:read("*a"); |
| 9 | return parse_xml_real(s); |
| 10 | end |
| 11 | local function setXml(user, host, xml) |
| 12 | local jid = user.."@"..host; |
| 13 | local path = "data/"..jid..".xml"; |
| 14 | if xml then |
| 15 | local f = io.open(path, "w"); |
| 16 | if not f then return; end |
| 17 | local s = tostring(xml); |
| 18 | f:write(s); |
| 19 | f:close(); |
| 20 | return true; |
| 21 | else |
| 22 | return os.remove(path); |
| 23 | end |
| 24 | end |
| 25 | local function getUserElement(xml) |
| 26 | if xml and xml.name == "server-data" then |
| 27 | local host = xml.tags[1]; |
| 28 | if host and host.name == "host" then |
| 29 | local user = host.tags[1]; |
| 30 | if user and user.name == "user" then |
| 31 | return user; |
| 32 | end |
| 33 | end |
| 34 | end |
| 35 | end |
| 36 | local function createOuterXml(user, host) |
| 37 | return st.stanza("server-data", {xmlns='http://www.xmpp.org/extensions/xep-0227.html#ns'}) |
| 38 | :tag("host", {jid=host}) |
| 39 | :tag("user", {name = user}); |
| 40 | end |
| 41 | local function removeFromArray(array, value) |
| 42 | for i,item in ipairs(array) do |
| 43 | if item == value then |
| 44 | table.remove(array, i); |
| 45 | return; |
| 46 | end |
| 47 | end |
| 48 | end |
| 49 | local function removeStanzaChild(s, child) |
| 50 | removeFromArray(s.tags, child); |
| 51 | removeFromArray(s, child); |
| 52 | end |
| 53 | |
| 54 | local handlers = {}; |
| 55 | |
| 56 | handlers.accounts = { |
| 57 | get = function(self, user) |
| 58 | local user = getUserElement(getXml(user, self.host)); |
| 59 | if user and user.attr.password then |
| 60 | return { password = user.attr.password }; |
| 61 | end |
| 62 | end; |
| 63 | set = function(self, user, data) |
| 64 | if data and data.password then |
| 65 | local xml = getXml(user, self.host); |
| 66 | if not xml then xml = createOuterXml(user, self.host); end |
| 67 | local usere = getUserElement(xml); |
| 68 | usere.attr.password = data.password; |
| 69 | return setXml(user, self.host, xml); |
| 70 | else |
| 71 | return setXml(user, self.host, nil); |
| 72 | end |
| 73 | end; |
| 74 | }; |
| 75 | handlers.vcard = { |
| 76 | get = function(self, user) |
| 77 | local user = getUserElement(getXml(user, self.host)); |
| 78 | if user then |
| 79 | local vcard = user:get_child("vCard", 'vcard-temp'); |
| 80 | if vcard then |
| 81 | return st.preserialize(vcard); |
| 82 | end |
| 83 | end |
| 84 | end; |
| 85 | set = function(self, user, data) |
| 86 | local xml = getXml(user, self.host); |
| 87 | local usere = xml and getUserElement(xml); |
| 88 | if usere then |
| 89 | local vcard = usere:get_child("vCard", 'vcard-temp'); |
| 90 | if vcard then |
| 91 | removeStanzaChild(usere, vcard); |
| 92 | elseif not data then |
| 93 | return true; |
| 94 | end |
| 95 | if data then |
| 96 | vcard = st.deserialize(data); |
| 97 | usere:add_child(vcard); |
| 98 | end |
| 99 | return setXml(user, self.host, xml); |
| 100 | end |
| 101 | return true; |
| 102 | end; |
| 103 | }; |
| 104 | handlers.private = { |
| 105 | get = function(self, user) |
| 106 | local user = getUserElement(getXml(user, self.host)); |
| 107 | if user then |
| 108 | local private = user:get_child("query", "jabber:iq:private"); |
| 109 | if private then |
| 110 | local r = {}; |
| 111 | for _, tag in ipairs(private.tags) do |
| 112 | r[tag.name..":"..tag.attr.xmlns] = st.preserialize(tag); |
| 113 | end |
| 114 | return r; |
| 115 | end |
| 116 | end |
| 117 | end; |
| 118 | set = function(self, user, data) |
| 119 | local xml = getXml(user, self.host); |
| 120 | local usere = xml and getUserElement(xml); |
| 121 | if usere then |
| 122 | local private = usere:get_child("query", 'jabber:iq:private'); |
| 123 | if private then removeStanzaChild(usere, private); end |
| 124 | if data and next(data) ~= nil then |
| 125 | private = st.stanza("query", {xmlns='jabber:iq:private'}); |
| 126 | for _,tag in pairs(data) do |
| 127 | private:add_child(st.deserialize(tag)); |
| 128 | end |
| 129 | usere:add_child(private); |
| 130 | end |
| 131 | return setXml(user, self.host, xml); |
| 132 | end |
| 133 | return true; |
| 134 | end; |
| 135 | }; |
| 136 | |
| 137 | ----------------------------- |
| 138 | local driver = {}; |
| 139 | driver.__index = driver; |
| 140 | |
| 141 | function driver:open(host, datastore, typ) |
| 142 | local cache_key = host.." "..datastore; |
| 143 | if self.ds_cache[cache_key] then return self.ds_cache[cache_key]; end |
| 144 | local instance = setmetatable({}, self); |
| 145 | instance.host = host; |
| 146 | instance.datastore = datastore; |
| 147 | local handler = handlers[datastore]; |
| 148 | if not handler then return nil; end |
| 149 | for key,val in pairs(handler) do |
| 150 | instance[key] = val; |
| 151 | end |
| 152 | if instance.init then instance:init(); end |
| 153 | self.ds_cache[cache_key] = instance; |
| 154 | return instance; |
| 155 | end |
| 156 | |
| 157 | ----------------------------- |
| 158 | local _M = {}; |
| 159 | |
| 160 | function _M.new() |
| 161 | local instance = setmetatable({}, driver); |
| 162 | instance.__index = instance; |
| 163 | instance.ds_cache = {}; |
| 164 | return instance; |
| 165 | end |
| 166 | |
| 167 | return _M; |