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local setmetatable = setmetatable;
local error = error;
local unpack = unpack;
local module = module;
local tostring = tostring;
local pairs, next = pairs, next;
local prosody = prosody;
local assert = assert;
local require = require;
local st = require "util.stanza";
local DBI = require "DBI";
-- connect to db
local option_datastore_params = module:get_option("datastore_params") or error("Missing option: datastore_params");
local database;
do
local driver, db = unpack(option_datastore_params);
module:log("debug", "Opening database: %s", "dbi:"..driver..":"..db);
prosody.unlock_globals();
local dbh, err = DBI.Connect(unpack(option_datastore_params));
prosody.lock_globals();
assert(dbh, err);
dbh:autocommit(true)
database = dbh;
end
-- initialize db
local ejabberd_init = module:require("ejabberd_init");
ejabberd_init.init(database);
local sqlcache = {};
local function prepare(sql)
module:log("debug", "query: %s", sql);
local err;
local r = sqlcache[sql];
if not r then
r, err = database:prepare(sql);
if not r then error("Unable to prepare SQL statement: "..err); end
sqlcache[sql] = r;
end
return r;
end
local _parse_xml = module:require("xmlparse");
local function parse_xml(str)
local s = _parse_xml(str);
if s and not s.gsub then
return st.preserialize(s);
end
end
local function unparse_xml(s)
return tostring(st.deserialize(s));
end
local handlers = {};
handlers.accounts = {
get = function(self, user)
local select = self:query("select password from users where username=? and host=?", user, self.host);
local row = select and select:fetch();
if row then return { password = row[1] }; end
end;
set = function(self, user, data)
if data and data.password then
return self:modify("update users set password=? where username=? and host=?", data.password, user, self.host)
or self:modify("insert into users (username, host, password) values (?, ?, ?)", user, self.host, data.password);
else
return self:modify("delete from users where username=? and host=?", user, self.host);
end
end;
};
handlers.vcard = {
get = function(self, user)
local select = self:query("select vcard from vcard where username=? and host=?", user, self.host);
local row = select and select:fetch();
if row then return parse_xml(row[1]); end
end;
set = function(self, user, data)
if data then
data = unparse_xml(data);
return self:modify("update vcard set vcard=? where username=? and host=?", data, user, self.host)
or self:modify("insert into vcard (username, host, vcard) values (?, ?, ?)", user, self.host, data);
else
return self:modify("delete from vcard where username=? and host=?", user, self.host);
end
end;
};
handlers.private = {
get = function(self, user)
local select = self:query("select namespace,data from private_storage where username=? and host=?", user, self.host);
if select then
local data = {};
for row in select:rows() do
data[row[1]] = parse_xml(row[2]);
end
return data;
end
end;
set = function(self, user, data)
if data then
self:modify("delete from private_storage where username=? and host=?", user, self.host);
for namespace,text in pairs(data) do
self:modify("insert into private_storage (username, host, namespace, data) values (?, ?, ?, ?)", user, self.host, namespace, unparse_xml(text));
end
return true;
else
return self:modify("delete from private_storage where username=? and host=?", user, self.host);
end
end;
-- TODO map_set, map_get
};
local subscription_map = { N = "none", B = "both", F = "from", T = "to" };
local subscription_map_reverse = { none = "N", both = "B", from = "F", to = "T" };
handlers.roster = {
get = function(self, user)
local select = self:query("select jid,nick,subscription,ask,server,subscribe,type from rosterusers where username=?", user);
if select then
local roster = { pending = {} };
for row in select:rows() do
local jid,nick,subscription,ask,server,subscribe,typ = unpack(row);
local item = { groups = {} };
if nick == "" then nick = nil; end
item.nick = nick;
item.subscription = subscription_map[subscription];
if ask == "N" then ask = nil;
elseif ask == "O" then ask = "subscribe"
elseif ask == "I" then roster.pending[jid] = true; ask = nil;
elseif ask == "B" then roster.pending[jid] = true; ask = "subscribe";
else module:log("debug", "bad roster_item.ask: %s", ask); ask = nil; end
item.ask = ask;
roster[jid] = item;
end
select = self:query("select jid,grp from rostergroups where username=?", user);
if select then
for row in select:rows() do
local jid,grp = unpack(row);
if roster[jid] then roster[jid].groups[grp] = true; end
end
end
select = self:query("select version from roster_version where username=?", user);
local row = select and select:fetch();
if row then
roster[false] = { version = row[1]; };
end
return roster;
end
end;
set = function(self, user, data)
if data and next(data) ~= nil then
self:modify("delete from rosterusers where username=?", user);
self:modify("delete from rostergroups where username=?", user);
self:modify("delete from roster_version where username=?", user);
local done = {};
local pending = data.pending or {};
for jid,item in pairs(data) do
if jid and jid ~= "pending" then
local subscription = subscription_map_reverse[item.subscription];
local ask;
if pending[jid] then
if item.ask then ask = "B"; else ask = "I"; end
else
if item.ask then ask = "O"; else ask = "N"; end
end
local r = self:modify("insert into rosterusers (username,jid,nick,subscription,ask,askmessage,server,subscribe) values (?, ?, ?, ?, ?, '', '', '')", user, jid, item.nick or "", subscription, ask);
if not r then module:log("debug", "--- :( %s", tostring(r)); end
done[jid] = true;
for group in pairs(item.groups) do
self:modify("insert into rostergroups (username,jid,grp) values (?, ?, ?)", user, jid, group);
end
end
end
for jid in pairs(pending) do
if not done[jid] then
self:modify("insert into rosterusers (username,jid,nick,subscription,ask,askmessage,server,subscribe) values (?, ?, ?, ?, ?. ''. ''. '')", user, jid, "", "N", "I");
end
end
local version = data[false] and data[false].version;
if version then
self:modify("insert into roster_version (username,version) values (?, ?)", user, version);
end
return true;
else
self:modify("delete from rosterusers where username=?", user);
self:modify("delete from rostergroups where username=?", user);
self:modify("delete from roster_version where username=?", user);
end
end;
};
-----------------------------
local driver = {};
driver.__index = driver;
function driver:query(sql, ...)
local stmt,err = prepare(sql);
if not stmt then
module:log("error", "Failed to prepare SQL [[%s]], error: %s", sql, err);
return nil, err;
end
local ok, err = stmt:execute(...);
if not ok then
module:log("error", "Failed to execute SQL [[%s]], error: %s", sql, err);
return nil, err;
end
return stmt;
end
function driver:modify(sql, ...)
local stmt, err = self:query(sql, ...);
if stmt and stmt:affected() > 0 then return stmt; end
return nil, err;
end
function driver:open(datastore, typ)
local instance = setmetatable({ host = module.host, datastore = datastore }, self);
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
return instance;
end
-----------------------------
module:add_item("data-driver", driver);
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