prosody-modules
63ef69b2f046
mod_report_forward/mod_report_forward.lua

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mod_report_forward/mod_report_forward.lua @ 6319:63ef69b2f046

mod_http_oauth2: Assume Prosody 13.0+ roles are available Per the README, 0.12 is not supported, so we should not need to worry about this. Plus it is assumed to be present elsewhere and that would throw errors.
author Kim Alvefur <zash@zash.se>
date Wed, 02 Jul 2025 16:15:32 +0200
parent 6142:fc521fb5ffa0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 local dt = require "util.datetime";
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2 local jid = require "util.jid";
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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);
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8
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9 local count_report = module:metric("counter", "forwarded", "reports", "Number of spam and abuse reports forwarded to remote receivers.");
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10
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11 module:depends("spam_reporting");
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12
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13 local destinations = module:get_option_set("report_forward_to", {});
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14
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15 local archive = module:open_store("archive", "archive");
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16
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17 local cache_size = module:get_option_number("report_forward_contact_cache_size", 256);
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18 local report_to_origin = module:get_option_boolean("report_forward_to_origin", true);
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19 local report_to_origin_fallback = module:get_option_boolean("report_forward_to_origin_fallback", true);
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20 local contact_lookup_timeout = module:get_option_number("report_forward_contact_lookup_timeout", 180);
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21
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22 local body_template = module:get_option_string("report_forward_body_template", [[
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23 SPAM/ABUSE REPORT
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24 -----------------
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25
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26 Reported JID: {reported_jid}
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27
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28 A user on our service has reported a message originating from the above JID on
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29 your server.
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30
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31 {reported_message_time&The reported message was sent at: {reported_message_time}}
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32
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33 --
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34 This message contains also machine-readable payloads, including XEP-0377, in case
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35 you want to automate handling of these reports. You can receive these reports
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36 to a different address by setting 'report-addresses' in your server
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37 contact info configuration. For more information, see https://xmppbl.org/reports/
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38 ]]):gsub("^%s+", ""):gsub("(%S)\n(%S)", "%1 %2");
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39
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40 local report_addresses = require "util.cache".new(cache_size);
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41
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42 local function get_address(form, ...)
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43 for i = 1, select("#", ...) do
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44 local field_var = select(i, ...);
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45 local field = form:get_child_with_attr("field", nil, "var", field_var);
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46 if field then
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47 for value in field:childtags("value") do
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48 local parsed = url.parse(value:get_text());
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49 if parsed.scheme == "xmpp" and parsed.path and not parsed.query then
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50 return parsed.path;
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51 end
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52 end
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53 else
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54 module:log("debug", "No field '%s'", field_var);
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55 end
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56 end
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57 end
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58
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59 local function get_origin_report_address(reported_jid)
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60 local host = jid.host(reported_jid);
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61 local address = report_addresses:get(host);
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62 if address then return address; end
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63
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64 local contact_query = st.iq({ type = "get", to = host, from = module.host, id = new_id() })
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65 :query("http://jabber.org/protocol/disco#info");
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66
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67 return module:send_iq(contact_query, prosody.hosts[module.host], contact_lookup_timeout)
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68 :next(function (result)
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69 module:log("debug", "Processing contact form...");
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70 local response = result.stanza;
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71 if response.attr.type == "result" then
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72 for form in response.tags[1]:childtags("x", "jabber:x:data") do
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73 local form_type = form:get_child_with_attr("field", nil, "var", "FORM_TYPE");
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74 if form_type and form_type:get_child_text("value") == "http://jabber.org/network/serverinfo" then
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75 address = get_address(form, "report-addresses", "abuse-addresses");
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76 break;
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77 end
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78 end
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79 end
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80
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81 if not address then
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82 if report_to_origin_fallback then
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83 -- If no contact address found, but fallback is enabled,
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84 -- just send the report to the domain
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85 module:log("debug", "Falling back to domain to send report to %s", host);
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86 address = host;
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87 else
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88 module:log("warn", "Failed to query contact addresses of %s: %s", host, response);
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89 end
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90 end
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91
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92 return address;
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93 end);
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94 end
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95
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96 local function send_report(to, message)
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97 local m = st.clone(message);
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98 m.attr.to = to;
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99 module:send(m);
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100 end
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101
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102 function forward_report(event)
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103 local reporter_username = event.origin.username;
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104 local reporter_jid = jid.join(reporter_username, module.host);
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105 local reported_jid = event.jid;
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106
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107 local report = st.clone(event.report);
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108 report:text_tag("jid", reported_jid, { xmlns = "urn:xmpp:jid:0" });
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109
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110 local reported_message_el = report:get_child_with_attr(
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111 "stanza-id",
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112 "urn:xmpp:sid:0",
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113 "by",
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114 reported_jid,
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115 jid.prep
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116 );
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117
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118 local reported_message, reported_message_time, reported_message_with;
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119 if reported_message_el then
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120 reported_message, reported_message_time, reported_message_with = archive:get(reporter_username, reported_message_el.attr.id);
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121 if jid.bare(reported_message_with) ~= event.jid then
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122 reported_message = nil;
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123 reported_message_time = nil;
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124 end
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125 end
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126
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127 local body_text = render(body_template, {
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128 reporter_jid = reporter_jid;
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129 reported_jid = event.jid;
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130 reported_message_time = dt.datetime(reported_message_time);
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131 });
5238
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132
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133 local message = st.message({ from = module.host, id = new_id() })
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134 :text_tag("body", body_text)
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135 :add_child(report);
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136
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137 if reported_message then
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138 reported_message.attr.xmlns = "jabber:client";
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139 local fwd = st.stanza("forwarded", { xmlns = "urn:xmpp:forward:0" })
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140 :tag("delay", { xmlns = "urn:xmpp:delay", stamp = dt.datetime(reported_message_time) }):up()
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141 :add_child(reported_message);
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142 message:add_child(fwd);
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143 end
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144
5238
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145 for destination in destinations do
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parents: 6068
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146 count_report:with_labels():add(1);
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147 send_report(destination, message);
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148 end
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149
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150 if report_to_origin then
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151 module:log("debug", "Sending report to origin server...");
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152 get_origin_report_address(event.jid):next(function (origin_report_address)
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153 if not origin_report_address then
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154 module:log("warn", "Couldn't report to origin: no contact address found for %s", jid.host(event.jid));
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155 return;
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156 end
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157 send_report(origin_report_address, message);
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parents: 5880
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158 end):catch(function (e)
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159 module:log("error", "Failed to report to origin server: %s", e);
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160 end);
5238
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161 end
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parents:
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162 end
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parents:
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163
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164 module:hook("spam_reporting/abuse-report", forward_report, -1);
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parents:
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165 module:hook("spam_reporting/spam-report", forward_report, -1);
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parents:
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166 module:hook("spam_reporting/unknown-report", forward_report, -1);