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1
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2 require "util.stanza"
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3
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4 local st = stanza;
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5
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6 local t_concat = table.concat;
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7 local format = string.format;
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8
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9 function init_stanza_dispatcher(session)
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10 local iq_handlers = {};
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11
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12 local session_log = session.log;
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13 local log = function (type, msg) session_log(type, "stanza_dispatcher", msg); end
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14 local send = session.send;
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15
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16
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17
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18 iq_handlers["jabber:iq:auth"] =
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19 function (stanza)
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20 local username = stanza[1]:child_with_name("username");
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21 local password = stanza[1]:child_with_name("password");
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22 local resource = stanza[1]:child_with_name("resource");
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23 if not (username and password and resource) then
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24 local reply = st.reply(stanza);
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25 send(reply:query("jabber:iq:auth")
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26 :tag("username"):up()
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27 :tag("password"):up()
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28 :tag("resource"):up());
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29 return true;
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30 else
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31 username, password, resource = t_concat(username), t_concat(password), t_concat(resource);
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32 print(username, password, resource)
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33 local reply = st.reply(stanza);
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34 require "core.usermanager"
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35 if usermanager.validate_credentials(session.host, username, password) then
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36 -- Authentication successful!
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37 session.username = username;
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38 session.resource = resource;
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39 if not hosts[session.host].sessions[username] then
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40 hosts[session.host].sessions[username] = { sessions = {} };
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41 end
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42 hosts[session.host].sessions[username].sessions[resource] = session;
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43 send(st.reply(stanza));
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44 return true;
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45 else
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46 local reply = st.reply(stanza);
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47 reply.attr.type = "error";
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48 reply:tag("error", { code = "401", type = "auth" })
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49 :tag("not-authorized", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas" });
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50 send(reply);
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51 return true;
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52 end
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53 end
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54
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55 end
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56
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57 iq_handlers["jabber:iq:roster"] =
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58 function (stanza)
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59 if stanza.attr.type == "get" then
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60 session.roster = session.roster or rostermanager.getroster(session.username, session.host);
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61 if session.roster == false then
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62 send(st.reply(stanza)
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63 :tag("error", { type = "wait" })
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64 :tag("internal-server-error", { xmlns = "urn:ietf:params:xml:ns:xmpp-stanzas"}));
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65 return true;
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66 else session.roster = session.roster or {};
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67 end
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68 local roster = st.reply(stanza)
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69 :query("jabber:iq:roster");
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70 for jid in pairs(session.roster) do
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71 roster:tag("item", { jid = jid, subscription = "none" }):up();
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72 end
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73 send(roster);
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74 return true;
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75 end
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76 end
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77
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78
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79 return function (stanza)
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80 log("info", "--> "..tostring(stanza));
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81 if stanza.name == "iq" then
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82 if not stanza[1] then log("warn", "<iq> without child is invalid"); return; end
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83 if not stanza.attr.id then log("warn", "<iq> without id attribute is invalid"); end
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84 local xmlns = stanza[1].attr.xmlns;
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85 if not xmlns then log("warn", "Child of <iq> has no xmlns - invalid"); return; end
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86 if (((not stanza.attr.to) or stanza.attr.to == session.host or stanza.attr.to:match("@[^/]+$")) and (stanza.attr.type == "get" or stanza.attr.type == "set")) then -- Stanza sent to us
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87 if iq_handlers[xmlns] then
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88 if iq_handlers[xmlns](stanza) then return; end;
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89 end
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90 log("warn", "Unhandled namespace: "..xmlns);
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91 send(format("<iq type='error' id='%s'><error type='cancel'><service-unavailable/></error></iq>", stanza.attr.id));
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92 end
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93
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94 end
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95 -- Need to route stanza
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96 if stanza.attr.to and ((not hosts[stanza.attr.to]) or hosts[stanza.attr.to].type ~= "local") then
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97 stanza.attr.from = session.username.."@"..session.host;
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98 session.send_to(stanza.attr.to, stanza);
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99 end
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100 end
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101
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102 end
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103
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