diff options
| -rw-r--r-- | misc/freeswitch/scripts/dialplan/router.lua | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/misc/freeswitch/scripts/dialplan/router.lua b/misc/freeswitch/scripts/dialplan/router.lua new file mode 100644 index 0000000..2071288 --- /dev/null +++ b/misc/freeswitch/scripts/dialplan/router.lua @@ -0,0 +1,181 @@ +-- Gemeinschaft 5 module: call router class +-- (c) AMOOMA GmbH 2013 +-- + +module(...,package.seeall) + +Router = {} + +-- create route object +function Router.new(self, arg) + arg = arg or {} + object = arg.object or {} + setmetatable(object, self); + self.__index = self; + self.class = 'router'; + self.log = arg.log; + self.database = arg.database; + self.routes = arg.routes or {}; + self.caller = arg.caller; + self.variables = arg.variables or {}; + return object; +end + + +function Router.read_table(self, table_name) + local routing_table = {}; + + local sql_query = 'SELECT * \ + FROM `call_routes` `a` \ + JOIN `route_elements` `b` ON `a`.`id` = `b`.`call_route_id`\ + WHERE `a`.`table` = "' .. table_name .. '" \ + ORDER BY `a`.`position`, `b`.`position`'; + + local last_id = 0; + self.database:query(sql_query, function(route) + if last_id ~= tonumber(route.call_route_id) then + last_id = tonumber(route.call_route_id); + table.insert(routing_table, {id = route.call_route_id, name = route.name, endpoint_type = route.endpoint_type , endpoint_id = route.endpoint_id, elements = {} }); + end + + table.insert(routing_table[#routing_table].elements, { + var_in = route.var_in, + var_out = route.var_out, + pattern = route.pattern, + replacement = route.replacement, + action = route.action, + mandatory = common.str.to_b(route.mandatory), + }); + end); + + return routing_table; +end + + +function Router.expand_variables(self, line) + return (line:gsub('{([%a%d_]+)}', function(captured) + return variables[captured] or ''; + end)) +end + + +function Router.set_parameter(self, action, name, value) + if action == 'set_session_var' then + self.log:debug('ROUTER_SET_SESSION_VARIABLE - ', name, ' = ', value); + self.caller[name] = value; + elseif action == 'set_channel_var' then + self.log:debug('ROUTER_SET_VARIABLE - ', name, ' = ', value); + self.caller:set_variable(name, value); + elseif action == 'export_channel_var' then + self.log:debug('ROUTER_EXPORT_VARIABLE - ', name, ' = ', value); + self.caller:export_variable(name, value); + elseif action == 'set_header' then + self.log:debug('ROUTER_SIP_HEADER - ', name, ': ', value); + self.caller:export_variable('sip_h_' .. name, value); + else + self.log:error('ROUTER_SET_PARAMERER - unknown action: ', action, ', ', name, ' = ', value); + end +end + + +function Router.element_match(self, pattern, search_string, replacement) + local variables_list = {}; + local success, result = pcall(string.find, search_string, pattern); + + if not success then + self.log:error('ELEMENT_MATCH - table error - pattern: ', pattern, ', search_string: ', search_string); + elseif result then + return true, search_string:gsub(pattern, self:expand_variables(replacement, variables_list)); + end + + return false; +end + + +function Router.route_match(self, route) + local destination = { + gateway = 'gateway' .. route.endpoint_id, + ['type'] = route.endpoint_type, + id = route.endpoint_id, + actions = {} + }; + + local route_matches = false; + + for index=1, #route.elements do + local result = false; + local replacement = nil; + + local element = route.elements[index]; + if element.var_in == 'group' then + local groups = common.str.try(self.caller, 'auth_account.owner.groups'); + if not groups or type(groups) ~= 'table' then + if element.mandatory then + return false; + end + end + + for group_name, value in pairs(groups) do + result, replacement = self:element_match(tostring(element.pattern), tostring(group_name), tostring(element.replacement)); + if result then + break; + end + end + + else + local search_string = tostring(common.str.try(self.caller, element.var_in)) + result, replacement = self:element_match(tostring(element.pattern), tostring(search_string), tostring(element.replacement)); + end + + if element.action == 'not_match' then + result = not result; + end + + if not result then + if element.mandatory then + return false; + end + elseif element.action ~= 'match' and element.action ~= 'not_match' then + if element.action == 'set_route_var' then + destination[element.var_out] = replacement; + else + table.insert(destination.actions, {action = element.action, name = element.var_out, value = replacement}); + end + end + + if result then + route_matches = true; + end + end + + if route_matches then + return destination; + end; + + return nil; +end + + +function Router.route_run(self, table_name, phone_number, find_first) + local routing_table = self:read_table(table_name); + local routes = {}; + + if type(routing_table) == 'table' then + for index=1, #routing_table do + local route = self:route_match(routing_table[index], phone_number); + if route then + table.insert(routes, route); + self.log:info('ROUTE ', #routes,' - ', table_name,'=', routing_table[index].id, '/', routing_table[index].name, ', destination: ', route.type, '=', route.id); + if find_first then + return route; + end + else + self.log:debug('ROUTE_NO_MATCH - ', table_name, '=', routing_table[index].id, '/', routing_table[index].name); + end + end + end + + if not find_first then + return routes; + end +end |