prosody
352cd61e2682
plugins/mod_legacyauth.lua

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plugins/mod_legacyauth.lua @ 4638:352cd61e2682

modulemanager: Allow loading a module onto "*" (part-fixes #228)
author Matthew Wild <mwild1@gmail.com>
date Sat, 21 Apr 2012 20:00:30 +0100
parent 4258:ee445e658848
child 5083:4629c60a303b
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1 -- Prosody IM
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b7049746bd29 Update copyright headers for 2010
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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b1885732e979 GPL->MIT!
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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11 local st = require "util.stanza";
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12 local t_concat = table.concat;
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13
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14 local secure_auth_only = module:get_option("c2s_require_encryption")
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15 or module:get_option("require_encryption")
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16 or not(module:get_option("allow_unencrypted_plain_auth"));
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18 local sessionmanager = require "core.sessionmanager";
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19 local usermanager = require "core.usermanager";
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20 local nodeprep = require "util.encodings".stringprep.nodeprep;
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21 local resourceprep = require "util.encodings".stringprep.resourceprep;
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23 module:add_feature("jabber:iq:auth");
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24 module:hook("stream-features", function(event)
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25 local origin, features = event.origin, event.features;
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26 if secure_auth_only and not origin.secure then
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27 -- Sorry, not offering to insecure streams!
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28 return;
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29 elseif not origin.username then
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30 features:tag("auth", {xmlns='http://jabber.org/features/iq-auth'}):up();
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31 end
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32 end);
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34 module:hook("stanza/iq/jabber:iq:auth:query", function(event)
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35 local session, stanza = event.origin, event.stanza;
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36
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37 if session.type ~= "c2s_unauthed" then
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38 session.send(st.error_reply(stanza, "cancel", "service-unavailable", "Legacy authentication is only allowed for unauthenticated client connections."));
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39 return true;
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40 end
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41
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42 if secure_auth_only and not session.secure then
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43 session.send(st.error_reply(stanza, "modify", "not-acceptable", "Encryption (SSL or TLS) is required to connect to this server"));
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44 return true;
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45 end
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46
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47 local username = stanza.tags[1]:child_with_name("username");
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48 local password = stanza.tags[1]:child_with_name("password");
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49 local resource = stanza.tags[1]:child_with_name("resource");
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50 if not (username and password and resource) then
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51 local reply = st.reply(stanza);
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52 session.send(reply:query("jabber:iq:auth")
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53 :tag("username"):up()
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54 :tag("password"):up()
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55 :tag("resource"):up());
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56 else
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57 username, password, resource = t_concat(username), t_concat(password), t_concat(resource);
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58 username = nodeprep(username);
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59 resource = resourceprep(resource)
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60 local reply = st.reply(stanza);
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61 if usermanager.test_password(username, session.host, password) then
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62 -- Authentication successful!
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63 local success, err = sessionmanager.make_authenticated(session, username);
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64 if success then
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65 local err_type, err_msg;
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66 success, err_type, err, err_msg = sessionmanager.bind_resource(session, resource);
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67 if not success then
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68 session.send(st.error_reply(stanza, err_type, err, err_msg));
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69 session.username, session.type = nil, "c2s_unauthed"; -- FIXME should this be placed in sessionmanager?
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70 return true;
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71 elseif resource ~= session.resource then -- server changed resource, not supported by legacy auth
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72 session.send(st.error_reply(stanza, "cancel", "conflict", "The requested resource could not be assigned to this session."));
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73 session:close(); -- FIXME undo resource bind and auth instead of closing the session?
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74 return true;
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75 end
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76 end
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77 session.send(st.reply(stanza));
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78 else
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79 session.send(st.error_reply(stanza, "auth", "not-authorized"));
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80 end
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81 end
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82 return true;
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83 end);