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-- Gemeinschaft 5 module: conference class
-- (c) AMOOMA GmbH 2012
--
module(...,package.seeall)
Conference = {}
MEMBERS_MAX = 100;
PIN_LENGTH_MAX = 10;
PIN_LENGTH_MIN = 2;
PIN_TIMEOUT = 4000;
ANNOUNCEMENT_MAX_LEN = 10
ANNOUNCEMENT_SILENCE_THRESHOLD = 500
ANNOUNCEMENT_SILENCE_LEN = 3
-- create conference object
function Conference.new(self, arg)
arg = arg or {}
object = arg.object or {}
setmetatable(object, self);
self.__index = self;
self.class = 'conference';
self.log = arg.log;
self.database = arg.database;
self.record = arg.record;
self.max_members = 0;
return object;
end
-- find conference by id
function Conference.find_by_id(self, id)
local sql_query = 'SELECT * FROM `conferences` WHERE `id`= ' .. tonumber(id) .. ' LIMIT 1';
local conference = nil;
self.database:query(sql_query, function(conference_entry)
conference = Conference:new(self);
conference.record = conference_entry;
conference.id = tonumber(conference_entry.id);
conference.uuid = conference_entry.uuid;
conference.max_members = tonumber(conference.record.max_members) or MEMBERS_MAX;
end)
return conference;
end
-- find invitee by phone numbers
function Conference.find_invitee_by_numbers(self, phone_numbers)
if not self.record then
return false
end
local sql_query = string.format(
"SELECT `conference_invitees`.`pin` AS `pin`, `conference_invitees`.`speaker` AS `speaker`, `conference_invitees`.`moderator` AS `moderator` " ..
"FROM `conference_invitees` JOIN `phone_numbers` ON `phone_numbers`.`phone_numberable_id` = `conference_invitees`.`id` " ..
"WHERE `phone_numbers`.`phone_numberable_type` = 'ConferenceInvitee' AND `conference_invitees`.`conference_id` = %d " ..
"AND `phone_numbers`.`number` IN ('%s') LIMIT 1", self.record.id, table.concat(phone_numbers, "','"));
local invitee = nil;
self.database:query(sql_query, function(conference_entry)
invitee = conference_entry;
end)
return invitee;
end
function Conference.count(self)
return tonumber(self.caller:result('conference ' .. self.record.id .. ' list count')) or 0;
end
-- Try to enter a conference
function Conference.enter(self, caller, domain)
local cause = "NORMAL_CLEARING";
local pin = nil;
local flags = {'waste'};
self.caller = caller;
require "common.phone_number"
local phone_number_class = common.phone_number.PhoneNumber:new{log = self.log, database = self.database}
local phone_numbers = phone_number_class:list_by_owner(self.record.id, "Conference");
-- Set conference presence
require "dialplan.presence"
local presence = dialplan.presence.Presence:new();
presence:init{ log = log, accounts = phone_numbers, domain = domain, uuid = "conference_" .. self.record.id };
local conference_count = self:count();
-- Check if conference is full
if conference_count >= self.max_members then
presence:early();
self.log:debug(string.format("full conference %s (\"%s\"), members: %d, members allowed: %d", self.record.id, self.record.name, conference_count, self.max_members));
if (tonumber(self.record.conferenceable_id) == caller.account_owner_id)
and (self.record.conferenceable_type == caller.account_owner_type) then
self.log:debug("Allow owner of this conterence to enter a full conference");
else
cause = "CALL_REJECTED";
caller:hangup(cause);
return cause;
end;
end
-- Check if conference is within time frame
if self.record.start and self.record['end'] then
local d = {}
_,_,d.year,d.month,d.day,d.hour,d.min,d.sec=string.find(self.record.start, "(%d+)-(%d+)-(%d+) (%d+):(%d+):(%d+)");
local conference_start = os.time(d);
_,_,d.year,d.month,d.day,d.hour,d.min,d.sec=string.find(self.record['end'], "(%d+)-(%d+)-(%d+) (%d+):(%d+):(%d+)");
local conference_end = os.time(d);
local now = os.time(os.date("!*t", os.time()));
log:debug("conference - open: " .. os.date("%c",conference_start) .. " by " .. os.date("%c",conference_end) .. ", now: " .. os.date("%c",now));
if now < conference_start or now > conference_end then
cause = "CALL_REJECTED";
caller:hangup(cause);
return cause;
end
end
require 'common.str'
-- Owner ist always moderator
if (tonumber(self.record.conferenceable_id) == caller.account_owner_id) and (self.record.conferenceable_type == caller.account_owner_type) then
table.insert(flags, 'moderator');
log:debug("is owner - conference: " .. self.record.id .. ", owner: " .. caller.account_owner_type .. ":" .. caller.account_owner_id);
else
local invitee = self:find_invitee_by_numbers(caller.caller_phone_numbers);
if not common.str.to_b(self.record.open_for_anybody) and not invitee then
log:debug(string.format("conference %s (\"%s\"), caller %s not allowed to enter this conference", self.record.id, self.record.name, caller.caller_phone_number));
cause = "CALL_REJECTED";
caller:hangup(cause);
return cause;
end
if invitee then
log:debug("conference " .. self.record.id .. " member invited - speaker: " .. invitee.speaker .. ", moderator: " .. invitee.moderator);
if common.str.to_b(invitee.moderator) then
table.insert(flags, 'moderator');
end
if not common.str.to_b(invitee.speaker) then
table.insert(flags, 'mute');
end
pin = invitee.pin;
else
log:debug("conference " .. self.record.id .. " caller not invited");
end
end
if not pin and self.record.pin then
pin = self.record.pin
end
caller:answer();
caller:sleep(1000);
caller.session:streamFile('conference/conf-welcome.wav');
if pin and pin ~= "" then
local digits = "";
for i = 1, 3, 1 do
if digits == pin then
break
elseif digits ~= "" then
caller.session:streamFile('conference/conf-bad-pin.wav');
end
digits = caller.session:read(PIN_LENGTH_MIN, PIN_LENGTH_MAX, 'conference/conf-enter_conf_pin.wav', PIN_TIMEOUT, '#');
end
if digits ~= pin then
caller.session:streamFile("conference/conf-goodbye.wav");
return "CALL_REJECTED";
end
end
self.log:debug(string.format("entering conference %s - name: \"%s\", flags: %s, members: %d, max. members: %d",
self.record.id, self.record.name, table.concat(flags, ','), conference_count, self.max_members));
-- Members count will be incremented in a few milliseconds, set presence
if (conference_count + 1) >= self.max_members then
presence:early();
else
presence:confirmed();
end
-- Enter the conference
local name_file = nil;
-- Record caller's name
if common.str.to_b(self.record.announce_new_member_by_name) or common.str.to_b(self.record.announce_left_member_by_name) then
local uid = session:get_uuid();
name_file = "/tmp/conference_caller_name_" .. uid .. ".wav";
caller.session:streamFile("voicemail/vm-record_name1.wav");
caller.session:execute("playback", "tone_stream://%(1000,0,500)");
session:recordFile(name_file, ANNOUNCEMENT_MAX_LEN, ANNOUNCEMENT_SILENCE_THRESHOLD, ANNOUNCEMENT_SILENCE_LEN);
caller.session:streamFile(name_file);
end
-- Play entering caller's name if recorded
if name_file and (self:count() > 0) and common.str.to_b(self.record.announce_new_member_by_name) then
caller.session:execute('set',"result=${conference(" .. self.record.id .. " play ".. name_file .. ")}");
caller.session:execute('set',"result=${conference(" .. self.record.id .. " play conference/conf-has_joined.wav)}");
else
-- Ensure a surplus "#" digit is not passed to the conference
caller.session:read(1, 1, '', 1000, "#");
end
local result = caller.session:execute('conference', self.record.id .. "@profile_" .. self.record.id .. "++flags{" .. table.concat(flags, '|') .. "}");
self.log:debug('exited conference - result: ' .. tostring(result));
caller.session:streamFile("conference/conf-goodbye.wav")
-- Play leaving caller's name if recorded
if name_file then
if (self:count() > 0) and common.str.to_b(self.record.announce_left_member_by_name) then
if (self:count() == 1) then
caller.session:sleep(3000);
end
caller.session:execute('set',"result=${conference(" .. self.record.id .. " play ".. name_file .. ")}");
caller.session:execute('set',"result=${conference(" .. self.record.id .. " play conference/conf-has_left.wav)}");
end
os.remove(name_file);
end
-- Set presence according to member count
conference_count = self:count();
if conference_count >= self.max_members then
presence:early();
elseif conference_count > 0 then
presence:confirmed();
else
presence:terminated();
end
cause = "NORMAL_CLEARING";
caller.session:hangup(cause);
return cause;
end
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