xmlhandlers: Don't restrict CDATA
[prosody.git] / core / rostermanager.lua
index 83bb379e38a4d9b23270e9ff000a2bc07320df55..e2a92696391063c72c55026e47db68d1871602e5 100644 (file)
@@ -1,19 +1,26 @@
+-- Prosody IM
+-- Copyright (C) 2008-2010 Matthew Wild
+-- Copyright (C) 2008-2010 Waqas Hussain
+-- 
+-- This project is MIT/X11 licensed. Please see the
+-- COPYING file in the source package for more information.
+--
+
+
 
-local mainlog = log;
-local function log(type, message)
-       mainlog(type, "rostermanager", message);
-end
+
+local log = require "util.logger".init("rostermanager");
 
 local setmetatable = setmetatable;
 local format = string.format;
 local loadfile, setfenv, pcall = loadfile, setfenv, pcall;
 local pairs, ipairs = pairs, ipairs;
+local tostring = tostring;
 
 local hosts = hosts;
+local bare_sessions = bare_sessions;
 
-require "util.datamanager"
-
-local datamanager = datamanager;
+local datamanager = require "util.datamanager"
 local st = require "util.stanza";
 
 module "rostermanager"
@@ -49,10 +56,11 @@ function remove_from_roster(session, jid)
 end
 
 function roster_push(username, host, jid)
-       if hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster then
+       local roster = jid and jid ~= "pending" and hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster;
+       if roster then
                local item = hosts[host].sessions[username].roster[jid];
                local stanza = st.iq({type="set"});
-               stanza:tag("query", {xmlns = "jabber:iq:roster"});
+               stanza:tag("query", {xmlns = "jabber:iq:roster", ver = tostring(roster[false].version or "1")  });
                if item then
                        stanza:tag("item", {jid = jid, subscription = item.subscription, name = item.name, ask = item.ask});
                        for group in pairs(item.groups) do
@@ -61,8 +69,8 @@ function roster_push(username, host, jid)
                else
                        stanza:tag("item", {jid = jid, subscription = "remove"});
                end
-               stanza:up();
-               stanza:up();
+               stanza:up(); -- move out from item
+               stanza:up(); -- move out from stanza
                -- stanza ready
                for _, session in pairs(hosts[host].sessions[username].sessions) do
                        if session.interested then
@@ -74,65 +82,223 @@ function roster_push(username, host, jid)
 end
 
 function load_roster(username, host)
-       if hosts[host] and hosts[host].sessions[username] then
-               local roster = hosts[host].sessions[username].roster;
-               if not roster then
-                       roster = datamanager.load(username, host, "roster") or {};
-                       hosts[host].sessions[username].roster = roster;
-               end
-               return roster;
+       local jid = username.."@"..host;
+       log("debug", "load_roster: asked for: "..jid);
+       local user = bare_sessions[jid];
+       local roster;
+       if user then
+               roster = user.roster;
+               if roster then return roster; end
+               log("debug", "load_roster: loading for new user: "..username.."@"..host);
+       else -- Attempt to load roster for non-loaded user
+               log("debug", "load_roster: loading for offline user: "..username.."@"..host);
+       end
+       roster = datamanager.load(username, host, "roster") or {};
+       if user then user.roster = roster; end
+       if not roster[false] then roster[false] = { }; end
+       if roster[jid] then
+               roster[jid] = nil;
+               log("warn", "roster for "..jid.." has a self-contact");
        end
-       -- Attempt to load roster for non-loaded user
-       return datamanager.load(username, host, "roster") or {};
+       hosts[host].events.fire_event("roster-load", username, host, roster);
+       return roster;
 end
 
-function save_roster(username, host)
-       if hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster then
-               return datamanager.store(username, host, "roster", hosts[host].sessions[username].roster);
+function save_roster(username, host, roster)
+       log("debug", "save_roster: saving roster for "..username.."@"..host);
+       if not roster then
+               roster = hosts[host] and hosts[host].sessions[username] and hosts[host].sessions[username].roster;
+               --if not roster then
+               --      --roster = load_roster(username, host);
+               --      return true; -- roster unchanged, no reason to save
+               --end
        end
+       if roster then
+               local metadata = roster[false];
+               if not metadata then
+                       metadata = {};
+                       roster[false] = metadata;
+               end
+               if metadata.version ~= true then
+                       metadata.version = (metadata.version or 0) + 1;
+               end
+               return datamanager.store(username, host, "roster", roster);
+       end
+       log("warn", "save_roster: user had no roster to save");
        return nil;
 end
 
 function process_inbound_subscription_approval(username, host, jid)
        local roster = load_roster(username, host);
        local item = roster[jid];
-       if item and item.ask and (item.subscription == "none" or item.subscription == "from") then
+       if item and item.ask then
                if item.subscription == "none" then
                        item.subscription = "to";
-               else
+               else -- subscription == from
                        item.subscription = "both";
                end
                item.ask = nil;
-               return datamanager.store(username, host, "roster", roster);
+               return save_roster(username, host, roster);
        end
 end
 
 function process_inbound_subscription_cancellation(username, host, jid)
        local roster = load_roster(username, host);
        local item = roster[jid];
-       if item and (item.subscription == "to" or item.subscription == "both") then
+       local changed = nil;
+       if is_contact_pending_out(username, host, jid) then
+               item.ask = nil;
+               changed = true;
+       end
+       if item then
                if item.subscription == "to" then
                        item.subscription = "none";
-               else
+                       changed = true;
+               elseif item.subscription == "both" then
                        item.subscription = "from";
+                       changed = true;
                end
-               -- FIXME do we need to item.ask = nil;?
-               return datamanager.store(username, host, "roster", roster);
+       end
+       if changed then
+               return save_roster(username, host, roster);
        end
 end
 
 function process_inbound_unsubscribe(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       local changed = nil;
+       if is_contact_pending_in(username, host, jid) then
+               roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
+               changed = true;
+       end
+       if item then
+               if item.subscription == "from" then
+                       item.subscription = "none";
+                       changed = true;
+               elseif item.subscription == "both" then
+                       item.subscription = "to";
+                       changed = true;
+               end
+       end
+       if changed then
+               return save_roster(username, host, roster);
+       end
+end
+
+function is_contact_subscribed(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       return item and (item.subscription == "from" or item.subscription == "both");
+end
+
+function is_contact_pending_in(username, host, jid)
+       local roster = load_roster(username, host);
+       return roster.pending and roster.pending[jid];
+end
+function set_contact_pending_in(username, host, jid, pending)
        local roster = load_roster(username, host);
        local item = roster[jid];
        if item and (item.subscription == "from" or item.subscription == "both") then
+               return; -- false
+       end
+       if not roster.pending then roster.pending = {}; end
+       roster.pending[jid] = true;
+       return save_roster(username, host, roster);
+end
+function is_contact_pending_out(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       return item and item.ask;
+end
+function set_contact_pending_out(username, host, jid) -- subscribe
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       if item and (item.ask or item.subscription == "to" or item.subscription == "both") then
+               return true;
+       end
+       if not item then
+               item = {subscription = "none", groups = {}};
+               roster[jid] = item;
+       end
+       item.ask = "subscribe";
+       log("debug", "set_contact_pending_out: saving roster; set "..username.."@"..host..".roster["..jid.."].ask=subscribe");
+       return save_roster(username, host, roster);
+end
+function unsubscribe(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       if not item then return false; end
+       if (item.subscription == "from" or item.subscription == "none") and not item.ask then
+               return true;
+       end
+       item.ask = nil;
+       if item.subscription == "both" then
+               item.subscription = "from";
+       elseif item.subscription == "to" then
+               item.subscription = "none";
+       end
+       return save_roster(username, host, roster);
+end
+function subscribed(username, host, jid)
+       if is_contact_pending_in(username, host, jid) then
+               local roster = load_roster(username, host);
+               local item = roster[jid];
+               if not item then -- FIXME should roster item be auto-created?
+                       item = {subscription = "none", groups = {}};
+                       roster[jid] = item;
+               end
+               if item.subscription == "none" then
+                       item.subscription = "from";
+               else -- subscription == to
+                       item.subscription = "both";
+               end
+               roster.pending[jid] = nil;
+               -- TODO maybe remove roster.pending if empty
+               return save_roster(username, host, roster);
+       end -- TODO else implement optional feature pre-approval (ask = subscribed)
+end
+function unsubscribed(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       local pending = is_contact_pending_in(username, host, jid);
+       local changed = nil;
+       if is_contact_pending_in(username, host, jid) then
+               roster.pending[jid] = nil; -- TODO maybe delete roster.pending if empty?
+               changed = true;
+       end
+       if item then
                if item.subscription == "from" then
                        item.subscription = "none";
-               else
+                       changed = true;
+               elseif item.subscription == "both" then
                        item.subscription = "to";
+                       changed = true;
                end
-               item.ask = nil;
-               return datamanager.store(username, host, "roster", roster);
+       end
+       if changed then
+               return save_roster(username, host, roster);
+       end
+end
+
+function process_outbound_subscription_request(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       if item and (item.subscription == "none" or item.subscription == "from") then
+               item.ask = "subscribe";
+               return save_roster(username, host, roster);
        end
 end
 
-return _M;
\ No newline at end of file
+--[[function process_outbound_subscription_approval(username, host, jid)
+       local roster = load_roster(username, host);
+       local item = roster[jid];
+       if item and (item.subscription == "none" or item.subscription == "from" then
+               item.ask = "subscribe";
+               return save_roster(username, host, roster);
+       end
+end]]
+
+
+
+return _M;