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annotate mod_blocking/mod_blocking.lua @ 234:abcb59ab355c

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Add new motd_sequential module. This module lets you define numbered messages shown to each user in order, but only once per user, and persistent across server restarts. Useful for notifying users of added features and changes in an incremental fashion.
author Jeff Mitchell <jeffrey.mitchell@gmail.com>
date Wed, 04 Aug 2010 22:29:51 +0000
parents bcd7dc51a5e3
children 4986ffe35704
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local jid_split = require "util.jid".split;
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2 local st = require "util.stanza";
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3
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4 local xmlns_blocking = "urn:xmpp:blocking";
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5
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6 module:add_feature("urn:xmpp:blocking");
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7
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8 -- Add JID to default privacy list
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9 function add_blocked_jid(username, host, jid)
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10 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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11 local default_list_name = privacy_lists.default;
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12 if not default_list_name then
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13 default_list_name = "blocklist";
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14 privacy_lists.default = default_list_name;
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15 end
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16 local default_list = privacy_lists.lists[default_list_name];
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17 if not default_list then
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18 default_list = { name = default_list_name, items = {} };
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19 privacy_lists.lists[default_list_name] = default_list;
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20 end
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21 local items = default_list.items;
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22 local order = items[1] and items[1].order or 0; -- Must come first
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23 for i=1,#items do -- order must be unique
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24 local item = items[i];
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25 item.order = item.order + 1;
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26 if item.type == "jid" and item.action == "deny" and item.value == jid then
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27 return false;
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28 end
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29 end
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30 table.insert(items, 1, { type = "jid"
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31 , action = "deny"
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32 , value = jid
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33 , message = false
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34 , ["presence-out"] = false
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35 , ["presence-in"] = false
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36 , iq = false
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37 , order = order
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38 });
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39 datamanager.store(username, host, "privacy", privacy_lists);
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40 return true;
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41 end
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43 -- Remove JID from default privacy list
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44 function remove_blocked_jid(username, host, jid)
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45 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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46 local default_list_name = privacy_lists.default;
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47 if not default_list_name then return; end
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48 local default_list = privacy_lists.lists[default_list_name];
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49 if not default_list then return; end
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50 local items = default_list.items;
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51 local item, removed = nil, false;
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52 for i=1,#items do -- order must be unique
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53 item = items[i];
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54 if item.type == "jid" and item.action == "deny" and item.value == jid then
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55 table.remove(items, i);
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56 removed = true;
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57 break;
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58 end
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59 end
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60 if removed then
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61 datamanager.store(username, host, "privacy", privacy_lists);
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62 end
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63 return removed;
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64 end
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65
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66 function remove_all_blocked_jids(username, host)
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67 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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68 local default_list_name = privacy_lists.default;
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69 if not default_list_name then return; end
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70 local default_list = privacy_lists.lists[default_list_name];
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71 if not default_list then return; end
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72 local items = default_list.items;
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73 local item;
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74 for i=#items,1,-1 do -- order must be unique
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75 item = items[i];
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76 if item.type == "jid" and item.action == "deny" then
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77 table.remove(items, i);
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78 end
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79 end
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80 datamanager.store(username, host, "privacy", privacy_lists);
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81 return true;
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82 end
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83
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84 function get_blocked_jids(username, host)
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85 -- Return array of blocked JIDs in default privacy list
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86 local privacy_lists = datamanager.load(username, host, "privacy") or {};
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87 local default_list_name = privacy_lists.default;
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88 if not default_list_name then return {}; end
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89 local default_list = privacy_lists.lists[default_list_name];
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90 if not default_list then return {}; end
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91 local items = default_list.items;
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92 local item;
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93 local jid_list = {};
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94 for i=1,#items do -- order must be unique
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95 item = items[i];
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96 if item.type == "jid" and item.action == "deny" then
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97 jid_list[#jid_list+1] = item.value;
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98 end
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99 end
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100 return jid_list;
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101 end
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102
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103 function handle_blocking_command(session, stanza)
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104 local username, host = jid_split(stanza.attr.from);
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105 if stanza.attr.type == "set" then
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106 if stanza.tags[1].name == "block" then
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107 local block = stanza.tags[1];
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108 local block_jid_list = {};
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109 for item in block:childtags() do
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110 block_jid_list[#block_jid_list+1] = item.attr.jid;
161
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111 end
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112 if #block_jid_list == 0 then
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113 --FIXME: Reply bad-request
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114 else
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115 for _, jid in ipairs(block_jid_list) do
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116 add_blocked_jid(username, host, jid);
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117 end
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118 session.send(st.reply(stanza));
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119 end
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120 elseif stanza.tags[1].name == "unblock" then
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121 remove_all_blocked_jids(username, host);
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122 session.send(st.reply(stanza));
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123 end
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124 elseif stanza.attr.type == "get" and stanza.tags[1].name == "blocklist" then
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125 local reply = st.reply(stanza):tag("blocklist", { xmlns = xmlns_blocking });
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126 local blocked_jids = get_blocked_jids(username, host);
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127 for _, jid in ipairs(blocked_jids) do
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128 reply:tag("item", { jid = jid }):up();
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129 end
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130 session.send(reply);
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131 else
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132 --FIXME: Need to respond with service-unavailable
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133 end
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134 end
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135
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136 module:add_iq_handler("c2s", xmlns_blocking, handle_blocking_command);