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1 local dt = require "util.datetime"; |
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2 local jid = require "util.jid"; |
1 local st = require "util.stanza"; |
3 local st = require "util.stanza"; |
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4 local url = require "socket.url"; |
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5 |
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6 local new_id = require "util.id".short; |
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7 local render = require"util.interpolation".new("%b{}", function (s) return s; end); |
2 |
8 |
3 local destinations = module:get_option_set("spam_report_destinations", {}); |
9 local destinations = module:get_option_set("spam_report_destinations", {}); |
4 |
10 |
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11 local archive = module:open("archive"); |
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12 |
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13 local cache_size = module:get_option_number("spam_report_forwarder_contact_cache_size", 256); |
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14 local report_to_origin = module:get_option_boolean("spam_report_forwarder_to_origin", true); |
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15 local contact_lookup_timeout = module:get_option_number("spam_report_forwarder_contact_lookup_timeout", 180); |
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16 |
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17 local body_template = module:get_option_string("spam_report_forwarder_body_template", [[ |
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18 SPAM/ABUSE REPORT |
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19 ----------------- |
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20 |
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21 Reported JID: {reported_jid} |
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22 |
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23 A user on our service has reported a message originating from the above JID on |
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24 your server. |
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25 |
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26 {reported_message_time&The reported message was sent at: {reported_message_time}} |
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27 |
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28 -- |
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29 This message contains also machine-readable payloads, including XEP-0377, in case |
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30 you want to automate handling of these reports. You can receive these reports |
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31 to a different address by setting 'spam-report-addresses' in your server |
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32 contact info configuration. For more information, see https://xmppbl.org/reports/ |
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33 ]]):gsub("^%s+", ""):gsub("(%S)\n(%S)", "%1 %2"); |
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34 |
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35 local report_addresses = require "util.cache".new(cache_size); |
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36 |
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37 local function get_address(form, ...) |
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38 for i = 1, select("#", ...) do |
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39 local field_var = select(i, ...); |
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40 local field = form:get_child_with_attr("field", "jabber:x:data", "var", field_var); |
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41 if field then |
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42 return url.parse(field:get_child_text("value")).path; |
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43 end |
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44 end |
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45 end |
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46 |
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47 local function get_origin_report_address(reported_jid) |
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48 local host = jid.host(reported_jid); |
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49 local address = report_addresses:get(host); |
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50 if address then return address; end |
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51 |
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52 local contact_query = st.iq({ to = host, from = module.host, id = new_id() }) |
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53 :query("http://jabber.org/protocol/disco#info"); |
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54 |
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55 return module:send_iq(contact_query, prosody.hosts[module.host], contact_lookup_timeout) |
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56 :next(function (response) |
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57 if response.attr.type ~= "result" then return; end |
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58 |
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59 for form in response.tags[1]:childtags("x", "jabber:x:data") do |
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60 local form_type = form:get_child_with_attr("field", nil, "var", "FORM_TYPE"); |
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61 if form_type == "http://jabber.org/network/serverinfo" then |
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62 address = get_address(form, "spam-report-addresses", "abuse-addresses"); |
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63 break; |
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64 end |
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65 end |
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66 return address; |
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67 end); |
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68 end |
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69 |
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70 local function send_report(to, message) |
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71 local m = st.clone(message); |
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72 m.attr.to = to; |
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73 module:send(m); |
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74 end |
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75 |
5 function forward_report(event) |
76 function forward_report(event) |
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77 local reporter_username = event.origin.username; |
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78 local reporter_jid = jid.join(reporter_username, module.host); |
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79 local reported_jid = event.jid; |
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80 |
6 local report = st.clone(event.report); |
81 local report = st.clone(event.report); |
7 report:text_tag("jid", event.jid, { xmlns = "urn:xmpp:jid:0" }); |
82 report:text_tag("jid", reported_jid, { xmlns = "urn:xmpp:jid:0" }); |
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83 |
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84 local reported_message_id = report:get_child_with_attr( |
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85 "stanza-id", |
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86 "urn:xmpp:sid:0", |
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87 "by", |
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88 reported_jid, |
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89 jid.prep |
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90 ); |
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91 |
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92 local reported_message, reported_message_time, reported_message_with; |
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93 if reported_message_id then |
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94 reported_message, reported_message_time, reported_message_with = archive:get(reporter_username, reported_message_id); |
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95 if jid.bare(reported_message_with) ~= event.jid then |
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96 reported_message = nil; |
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97 end |
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98 end |
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99 |
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100 local body_text = render(body_template, { |
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101 reporter_jid = reporter_jid; |
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102 reported_jid = event.jid; |
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103 reported_message_time = dt.datetime(reported_message_time); |
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104 }); |
8 |
105 |
9 local message = st.message({ from = module.host }) |
106 local message = st.message({ from = module.host }) |
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107 :text_tag("body", body_text) |
10 :add_child(report); |
108 :add_child(report); |
11 |
109 |
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110 if reported_message then |
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111 reported_message.attr.xmlns = "jabber:client"; |
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112 local fwd = st.stanza("forwarded", { xmlns = "urn:xmpp:forward:0" }) |
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113 :tag("delay", { xmlns = "urn:xmpp:delay", stamp = dt.datetime(reported_message_time) }):up() |
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114 :add_child(reported_message); |
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115 message:add_child(fwd); |
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116 end |
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117 |
12 for destination in destinations do |
118 for destination in destinations do |
13 local m = st.clone(message); |
119 send_report(destination, message); |
14 m.attr.to = destination; |
120 end |
15 module:send(m); |
121 |
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122 if report_to_origin then |
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123 module:log("debug", "Sending report to origin server..."); |
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124 get_origin_report_address(event.jid):next(function (origin_report_address) |
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125 if not origin_report_address then |
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126 module:log("warn", "Couldn't report to origin: no contact address found for %s", jid.host(event.jid)); |
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127 return; |
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128 end |
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129 send_report(origin_report_address, message); |
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130 end); |
16 end |
131 end |
17 end |
132 end |
18 |
133 |
19 module:hook("spam_reporting/abuse-report", forward_report, -1); |
134 module:hook("spam_reporting/abuse-report", forward_report, -1); |
20 module:hook("spam_reporting/spam-report", forward_report, -1); |
135 module:hook("spam_reporting/spam-report", forward_report, -1); |