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local handlers = {};
handlers.accounts = {
get = function(self, user)
local select = self:query("select password from users where username=?", user);
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=?", data.password, user)
or self:modify("insert into users (username, password) values (?, ?)", user, data.password);
else
return self:modify("delete from users where username=?", user);
end
end;
};
handlers.vcard = {
get = function(self, user)
local select = self:query("select vcard from vcard where username=?", user);
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=?", data, user)
or self:modify("insert into vcard (username, vcard) values (?, ?)", user, data);
else
return self:modify("delete from vcard where username=?", user);
end
end;
};
handlers.private = {
get = function(self, user)
local select = self:query("select namespace,data from private_storage where username=?", user);
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=?", user);
for namespace,text in pairs(data) do
self:modify("insert into private_storage (username, namespace, data) values (?, ?, ?)", user, namespace, unparse_xml(text));
end
return true;
else
return self:modify("delete from private_storage where username=?", user);
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(rows);
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:prepare(sql)
module:log("debug", "query: %s", sql);
local err;
if not self.sqlcache then self.sqlcache = {}; end
local r = self.sqlcache[sql];
if r then return r; end
r, err = self.database:prepare(sql);
if not r then error("Unable to prepare SQL statement: "..err); end
self.sqlcache[sql] = r;
return r;
end
function driver:query(sql, ...)
local stmt = self:prepare(sql);
if stmt:execute(...) then return stmt; end
end
function driver:modify(sql, ...)
local stmt = self:query(sql, ...);
if stmt and stmt:affected() > 0 then return stmt; end
end
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(dbtype, dbname, ...)
local instance = setmetatable({}, driver);
instance.__index = instance;
instance.database = get_database(dbtype, dbname, ...);
instance.ds_cache = {};
return instance;
end
return _M;
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