Mercurial > prosody-modules

annotate mod_dnsupdate/mod_dnsupdate.lua @ 6513:5fb466693e85

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mod_storage_xmlarchive: Ensure list index files are removed using os.remove() on the list files leaves the new index files behind since util.datamanager does not know they are removed. Thanks Link Mauve
author Kim Alvefur <zash@zash.se>
date Tue, 07 Apr 2026 21:10:54 +0200
parents 0703ef9f8db8
children
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 modulemanager = require "core.modulemanager";
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5 local argparse = require "util.argparse";
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6 local dns = require"net.adns".resolver();
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7 local async = require "util.async";
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8 local set = require "util.set";
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9 local nameprep = require"util.encodings".stringprep.nameprep;
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10 local idna_to_ascii = require"util.encodings".idna.to_ascii;
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11
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12 local services = { "xmpp-client"; "xmpps-client"; "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 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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54fa2116bbf3 mod_dnsupdate: Add a --remove option to delete all SRV records
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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 domain = validate_dnsname_option(opts, "domain");
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50 if not domain then
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51 module:log("error", "--domain is required");
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52 return 1;
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53 end
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54 local primary = validate_dnsname_option(opts, "primary")
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55 or async.wait_for(dns:lookup_promise(domain, "SOA"):next(function(ret) return ret[1].soa.mname; end));
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56 if not primary then
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57 module:log("error", "Could not discover primary name server, specify it with --primary");
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58 return 1;
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59 end
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60
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61 print("zone", domain);
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62 print("server", primary);
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63 print("ttl " .. tostring(opts.ttl or 60 * 60));
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64
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65 for _, vhost in ipairs(arg) do
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66 if not vhost then
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67 module:log("error", "Host %q fails normalization", arg[1]);
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68 return 1;
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69 end
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70 local ihost = idna_to_ascii(vhost);
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71 if not ihost then
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72 module:log("error", "Host %q fails IDNA", vhost);
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73 return 1;
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74 end
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75 if not config.get(vhost, "component_module") and not config.get(vhost, "defined") then
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76 module:log("error", "Host %q is not defined in the config", vhost);
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77 return 1;
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78 end
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79
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80 local target = validate_dnsname_option(opts, "target", module:context(vhost):get_option_string("xmpp_host", ihost));
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81 -- TODO validate that target has A/AAAA
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82
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83 local configured_ports = {
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84 ["xmpp-client"] = module:get_option_array("c2s_ports", { 5222 });
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85 ["xmpp-server"] = module:get_option_array("s2s_ports", { 5269 });
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86 ["xmpps-client"] = module:get_option_array("c2s_direct_tls_ports", {});
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87 ["xmpps-server"] = module:get_option_array("s2s_direct_tls_ports", {});
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88 };
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89
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90 local modules_enabled = modulemanager.get_modules_for_host(vhost);
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91 if not modules_enabled:contains("c2s") then
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92 configured_ports["xmpp-client"] = {};
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93 configured_ports["xmpps-client"] = {};
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94 end
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95 if not modules_enabled:contains("s2s") then
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96 configured_ports["xmpp-server"] = {};
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97 configured_ports["xmpps-server"] = {};
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98 end
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99
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100 if modules_enabled:contains("net_multiplex") then
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101 for opt, ports in pairs(configured_ports) do
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102 ports:append(module:get_option_array(opt:sub(1, 5) == "xmpps" and "ssl_ports" or "ports", {}));
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103 end
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104 end
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105
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106 local existing_srv = {};
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107 for _, service in ipairs(services) do
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108 existing_srv[service] = dns:lookup_promise(("_%s._tcp.%s"):format(service, ihost), "SRV");
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109 end
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110
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111 for _, service in ipairs(services) do
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112 local config_ports = set.new(configured_ports[service]);
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113 local dns_ports = set.new();
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114
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115 if (opts.reset or opts.remove) and not opts.each then
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116 print(("del _%s._tcp.%s IN SRV"):format(service, ihost));
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117 else
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118 local records = (async.wait_for(existing_srv[service]));
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119 for _, rr in ipairs(records) do
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120 if target == nameprep(rr.srv.target):gsub("%.$", "") then
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121 dns_ports:add(rr.srv.port)
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122 elseif opts.each then
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123 print(("del _%s._tcp.%s IN SRV %s"):format(service, ihost, rr));
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124 end
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125 end
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126 end
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127
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128 if not opts.remove then
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Kim Alvefur <zash@zash.se>
parents: 6223
diff changeset
129 if config_ports:empty() then
0703ef9f8db8 mod_dnsupdate: Support multiple hosts/components
Kim Alvefur <zash@zash.se>
parents: 6223
diff changeset
130 print(("add _%s._tcp.%s IN SRV 0 0 0 ."):format(service, ihost));
0703ef9f8db8 mod_dnsupdate: Support multiple hosts/components
Kim Alvefur <zash@zash.se>
parents: 6223
diff changeset
131 else
0703ef9f8db8 mod_dnsupdate: Support multiple hosts/components
Kim Alvefur <zash@zash.se>
parents: 6223
diff changeset
132 for port in (config_ports - dns_ports) do
0703ef9f8db8 mod_dnsupdate: Support multiple hosts/components
Kim Alvefur <zash@zash.se>
parents: 6223
diff changeset
133 print(("add _%s._tcp.%s IN SRV 1 1 %d %s"):format(service, ihost, port, target));
0703ef9f8db8 mod_dnsupdate: Support multiple hosts/components
Kim Alvefur <zash@zash.se>
parents: 6223
diff changeset
134 end
6220
b6e390a97c85 mod_dnsupdate: Improve handling of existing DNS records
Kim Alvefur <zash@zash.se>
parents: 5688
diff changeset
135 end
b6e390a97c85 mod_dnsupdate: Improve handling of existing DNS records
Kim Alvefur <zash@zash.se>
parents: 5688
diff changeset
136 end
4896
54fa2116bbf3 mod_dnsupdate: Add a --remove option to delete all SRV records
Kim Alvefur <zash@zash.se>
parents: 4882
diff changeset
137 end
4762
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
138 end
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
139
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
140 print("show");
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
141 print("send");
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
142 print("answer");
ba312cd7907f mod_dnsupdate: Use with nsupdate to update DNS records from config
Kim Alvefur <zash@zash.se>
parents:
diff changeset
143 end