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annotate mod_seclabels/mod_seclabels.lua @ 3492:f59334da6df9

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mod_conversejs: Show fallback text if converse.js fails to load (thanks MattJ) This can happen if javascript is enabled but 3rd party resources are blocked, or some other error happened.
author Kim Alvefur <zash@zash.se>
date Tue, 19 Mar 2019 19:43:13 +0100
parents 7dbde05b48a9
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8eae74a31acb mod_seclabels: Prototype security labels plugin
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1 local st = require "util.stanza";
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2 local xml = require "util.xml";
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3
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4 local xmlns_label = "urn:xmpp:sec-label:0";
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5 local xmlns_label_catalog = "urn:xmpp:sec-label:catalog:2";
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6 local xmlns_label_catalog_old = "urn:xmpp:sec-label:catalog:0"; -- COMPAT
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7
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8 module:add_feature(xmlns_label);
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9 module:add_feature(xmlns_label_catalog);
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10 module:add_feature(xmlns_label_catalog_old);
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11
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12 module:hook("account-disco-info", function(event) -- COMPAT
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13 local stanza = event.stanza;
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14 if stanza then
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15 stanza:tag('feature', {var=xmlns_label}):up();
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16 stanza:tag('feature', {var=xmlns_label_catalog}):up();
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17 end;
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18 end);
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19
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20 local default_labels = {
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21 {
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22 name = "Unclassified",
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23 label = true,
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24 default = true,
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25 },
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26 Classified = {
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27 SECRET = { color = "black", bgcolor = "aqua", label = "THISISSECRET" };
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28 PUBLIC = { label = "THISISPUBLIC" };
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29 };
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30 };
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31 local catalog_name = module:get_option_string("security_catalog_name", "Default");
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32 local catalog_desc = module:get_option_string("security_catalog_desc", "My labels");
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33 local labels = module:get_option("security_labels", default_labels);
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34
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35 function handle_catalog_request(request)
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36 local catalog_request = request.stanza.tags[1];
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37 local reply = st.reply(request.stanza)
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38 :tag("catalog", {
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39 xmlns = catalog_request.attr.xmlns,
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40 to = catalog_request.attr.to,
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41 name = catalog_name,
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42 desc = catalog_desc
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43 });
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44
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45 local function add_labels(catalog, labels, selector)
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46 local function add_item(item, name)
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47 local name = name or item.name;
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48 if item.label then
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49 if catalog_request.attr.xmlns == xmlns_label_catalog then
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50 catalog:tag("item", {
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51 selector = selector..name,
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52 default = item.default and "true" or nil,
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53 }):tag("securitylabel", { xmlns = xmlns_label })
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54 else -- COMPAT
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55 catalog:tag("securitylabel", {
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56 xmlns = xmlns_label,
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57 selector = selector..name,
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58 default = item.default and "true" or nil,
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59 })
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60 end
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61 if item.display or item.color or item.bgcolor then
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62 catalog:tag("displaymarking", {
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63 fgcolor = item.color,
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64 bgcolor = item.bgcolor,
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65 }):text(item.display or name):up();
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66 end
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67 if item.label == true then
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68 catalog:tag("label"):text(name):up();
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69 elseif type(item.label) == "string" then
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70 -- TODO Do we need anything other than XML parsing?
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71 if item.label:sub(1,1) == "<" then
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72 catalog:tag("label"):add_child(xml.parse(item.label)):up();
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73 else
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74 catalog:tag("label"):text(item.label):up();
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75 end
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76 elseif type(item.label) == "table" then
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77 catalog:tag("label"):add_child(item.label):up();
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78 end
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79 catalog:up();
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80 if catalog_request.attr.xmlns == xmlns_label_catalog then
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81 catalog:up();
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82 end
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83 else
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84 add_labels(catalog, item, (selector or "")..name.."|");
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85 end
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86 end
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87 for i = 1,#labels do
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88 add_item(labels[i])
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89 end
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90 for name, child in pairs(labels) do
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91 if type(name) == "string" then
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92 add_item(child, name)
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93 end
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94 end
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95 end
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96 -- TODO query remote servers
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97 --[[ FIXME later
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98 labels = module:fire_event("sec-label-catalog", {
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99 to = catalog_request.attr.to,
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100 request = request; -- or just origin?
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101 labels = labels;
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102 }) or labels;
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103 --]]
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104 add_labels(reply, labels, "");
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105 request.origin.send(reply);
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106 return true;
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107 end
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108 module:hook("iq/host/"..xmlns_label_catalog..":catalog", handle_catalog_request);
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109 module:hook("iq/self/"..xmlns_label_catalog..":catalog", handle_catalog_request); -- COMPAT
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110 module:hook("iq/self/"..xmlns_label_catalog_old..":catalog", handle_catalog_request); -- COMPAT