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annotate mod_blocking/mod_blocking.lua @ 161:fda7faee7677

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mod_blocking: XEP-0191 Simple Communications Blocking, should work, but not tested. Requires mod_privacy be loaded.
author Matthew Wild <mwild1@gmail.com>
date Thu, 03 Jun 2010 01:56:49 +0100
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children 9fe6d314fd07
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fda7faee7677 mod_blocking: XEP-0191 Simple Communications Blocking, should work, but not tested. Requires mod_privacy be loaded.
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1 module:add_feature("urn:xmpp:blocking");
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2
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3 -- Add JID to default privacy list
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4 function add_blocked_jid(username, host, jid)
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5 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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6 local default_list_name = privacy_lists.default;
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7 if not default_list_name then
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8 default_list_name = "blocklist";
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9 privacy_lists.default = default_list_name;
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10 end
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11 local default_list = privacy_lists.list[default_list_name];
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12 if not default_list then
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13 default_list = { name = default_list_name, items = {} };
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14 privacy_lists.lists[default_list_name] = default_list;
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15 end
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16 local items = default_list.items;
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17 local order = items[1].order; -- Must come first
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18 for i=1,#items do -- order must be unique
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19 items[i].order = items[i].order + 1;
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20 end
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21 table.insert(items, 1, { type = "jid"
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22 , action = "deny"
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23 , value = jid
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24 , message = false
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25 , ["presence-out"] = false
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26 , ["presence-in"] = false
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27 , iq = false
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28 , order = order
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29 };
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30 datamanager.store(username, host, "privacy", privacy_lists);
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31 end
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32
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33 -- Remove JID from default privacy list
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34 function remove_blocked_jid(username, host, jid)
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35 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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36 local default_list_name = privacy_lists.default;
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37 if not default_list_name then return; end
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38 local default_list = privacy_lists.list[default_list_name];
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39 if not default_list then return; end
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40 local items = default_list.items;
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41 local item;
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42 for i=1,#items do -- order must be unique
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43 item = items[i];
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44 if item.type == "jid" and item.value == jid then
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45 table.remove(items, i);
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46 return true;
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47 end
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48 end
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49 end
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50
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51 function get_blocked_jids(username, host)
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52 -- Return array of blocked JIDs in default privacy list
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53 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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54 local default_list_name = privacy_lists.default;
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55 if not default_list_name then return {}; end
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56 local default_list = privacy_lists.list[default_list_name];
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57 if not default_list then return {}; end
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58 local items = default_list.items;
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59 local item;
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60 local jid_list = {};
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61 for i=1,#items do -- order must be unique
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62 item = items[i];
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63 if item.type == "jid" then
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64 jid_list[#jid_list+1] = item.value;
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65 end
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66 end
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67 return jid_list;
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68 end
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69
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70 function handle_blocking_command(session, stanza)
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71 local username, host = jid_split(stanza.attr.from);
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72 if stanza.attr.type == "set" and stanza.tags[1].name == "block" then
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73 local block = stanza.tags[1]:get_child("block");
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74 local block_jid_list = {};
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75 for item in block:childtags() do
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76 block_jid_list[#block_jid_list+1] = item.attr.jid;
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77 end
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78 if #block_jid_list == 0 then
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79 --FIXME: Reply bad-request
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80 else
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81 for _, jid in ipairs(block_jid_list) do
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82 add_blocked_jid(username, host, jid);
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83 end
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84 session.send(st.reply(stanza));
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85 end
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86 elseif stanza.attr.type == "get" and stanza.tags[1].name == "blocklist" then
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87 local reply = st.reply(stanza):tag("blocklist", { xmlns = xmlns_block });
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88 local blocked_jids = get_blocked_jids(username, host);
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89 for _, jid in ipairs(blocked_jids) do
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90 reply:tag("item", { jid = jid }):up();
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91 end
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92 session.send(reply);
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93 else
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94 --FIXME: Need to respond with service-unavailable
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95 end
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96 end
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97
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98 module:add_iq_handler("c2s", xmlns_blocking, handle_blocking_command);