prosody-modules
e7b9bc629ecc
mod_dnsupdate/mod_dnsupdate.lua

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mod_dnsupdate/mod_dnsupdate.lua @ 4941:e7b9bc629ecc

mod_rest: Add special handling to catch MAM results from remote hosts Makes MAM queries to remote hosts works. As the comment says, MAM results from users' local archives or local MUCs are returned via origin.send() which is provided in the event and thus already worked. Results from remote hosts go via normal stanza routing and events, which need this extra handling to catch. This pattern of iq-set, message+, iq-result is generally limited to MAM. Closest similar thing might be MUC join, but to really handle that you would need the webhook callback mechanism.
author Kim Alvefur <zash@zash.se>
date Mon, 16 May 2022 19:47:09 +0200
parent 4896:54fa2116bbf3
child 5711:429be658c0bb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
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1 module:set_global();
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2
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3 local config = require "core.configmanager";
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4 local argparse = require "util.argparse";
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5 local dns = require"net.adns".resolver();
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6 local async = require "util.async";
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7 local set = require "util.set";
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8 local nameprep = require"util.encodings".stringprep.nameprep;
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9 local idna_to_ascii = require"util.encodings".idna.to_ascii;
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10
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11 local virtualhost_services = { "xmpp-client"; "xmpps-client"; "xmpp-server"; "xmpps-server" }
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12 local component_services = { "xmpp-server"; "xmpps-server" }
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13
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14 local function validate_dnsname_option(options, option_name, default)
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15 local host = options[option_name];
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16 if host == nil then return default end
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17 local normalized = nameprep(host);
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18 if not normalized then
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19 module:log("error", "--%s %q fails normalization");
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20 return;
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21 end
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22 local alabel = idna_to_ascii(normalized);
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23 if not alabel then
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24 module:log("error", "--%s %q fails IDNA");
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25 return;
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26 end
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27 return alabel;
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28 end
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29
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30 function module.command(arg)
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31 local opts = argparse.parse(arg, {
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32 short_params = { d = "domain"; p = "primary"; t = "target"; l = "ttl"; h = "help"; ["?"] = "help" };
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33 value_params = { domain = true; primary = true; target = true; ttl = true };
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34 });
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35
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36 if not arg[1] or arg[2] or not opts or opts.help or not opts.domain then
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37 local out = opts.help and io.stdout or io.stderr;
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38 out:write("prosodyctl mod_dnsupdate [options] virtualhost\n");
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39 out:write("\t-d --domain\tbase domain name *required*\n");
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40 out:write("\t-p --primary\tprimary DNS name server\n");
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41 out:write("\t-t --target\ttarget hostname for SRV\n");
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42 out:write("\t-l --ttl\tTTL to use\n");
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43 out:write("\t--each\tremove and replace individual SRV records\n");
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44 out:write("\t--reset\tremove and replace all SRV records\n");
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45 out:write("\t--remove\tremove all SRV records\n");
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46 return opts and opts.help and 0 or 1;
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47 end
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48
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49 local vhost = nameprep(arg[1]); -- TODO loop over arg[]?
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50 if not vhost then
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51 module:log("error", "Host %q fails normalization", arg[1]);
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52 return 1;
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53 end
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54 local ihost = idna_to_ascii(vhost);
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55 if not ihost then
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56 module:log("error", "Host %q fails IDNA", vhost);
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57 return 1;
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58 end
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59 local is_component = config.get(vhost, "component_module");
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60 if not is_component and not config.get(vhost, "defined") then
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61 module:log("error", "Host %q is not defined in the config", vhost);
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62 return 1;
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63 end
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64
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65 local services = virtualhost_services;
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66 if is_component then services = component_services; end
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67
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68 local domain = validate_dnsname_option(opts, "domain");
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69 if not domain then
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70 module:log("error", "--domain is required");
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71 return 1;
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72 end
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73 local primary = validate_dnsname_option(opts, "primary")
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74 or async.wait_for(dns:lookup_promise(domain, "SOA"):next(function(ret) return ret[1].soa.mname; end));
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75 if not primary then
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76 module:log("error", "Could not discover primary name server, specify it with --primary");
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77 return 1;
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78 end
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79 local target = validate_dnsname_option(opts, "target", module:context(vhost):get_option_string("xmpp_host", ihost));
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80 -- TODO validate that target has A/AAAA
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81
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82 local configured_ports = {
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83 ["xmpp-client"] = module:get_option_array("c2s_ports", { 5222 });
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84 ["xmpp-server"] = module:get_option_array("s2s_ports", { 5269 });
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85 ["xmpps-client"] = module:get_option_array("c2s_direct_tls_ports", {});
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86 ["xmpps-server"] = module:get_option_array("s2s_direct_tls_ports", {});
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87 };
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88
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89 if opts.multiplex then
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90 for opt, ports in pairs(configured_ports) do
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91 ports:append(module:get_option_array(opt:sub(1, 5) == "xmpps" and "ssl_ports" or "ports", {}));
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92 end
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93 end
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94
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95 local existing_srv = {};
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96 for _, service in ipairs(services) do
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97 existing_srv[service] = dns:lookup_promise(("_%s._tcp.%s"):format(service, ihost), "SRV");
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98 end
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99
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100 print("zone", domain);
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101 print("server", primary);
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102 print("ttl " .. tostring(opts.ttl or 60 * 60));
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103
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104 for _, service in ipairs(services) do
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105 local ports = set.new(configured_ports[service]);
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106 local records = (async.wait_for(existing_srv[service]));
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107 if opts.remove or opts.reset then
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108 print(("del _%s._tcp.%s IN SRV"):format(service, ihost));
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109 else
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110 for _, rr in ipairs(records) do
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111 if ports:contains(rr.srv.port) and target == nameprep(rr.srv.target):gsub("%.$", "") then
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112 ports:remove(rr.srv.port)
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113 elseif not opts.each then
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114 print(("del _%s._tcp.%s IN SRV"):format(service, ihost));
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115 break
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116 else
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117 print(("del _%s._tcp.%s IN SRV %s"):format(service, ihost, rr));
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118 end
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119 end
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120 end
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121 if not opts.remove then
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122 for port in ports do print(("add _%s._tcp.%s IN SRV 1 1 %d %s"):format(service, ihost, port, target)); end
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123 end
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ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
124 end
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
125
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
126 print("show");
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
127 print("send");
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
128 print("answer");
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
129 end