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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 services = { "xmpp-client"; "xmpps-client"; "xmpp-server"; "xmpps-server" } |
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12 |
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13 local function validate_dnsname_option(options, option_name, default) |
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14 local host = options[option_name]; |
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15 if host == nil then return default end |
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16 local normalized = nameprep(host); |
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17 if not normalized then |
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18 module:log("error", "--%s %q fails normalization"); |
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19 return; |
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20 end |
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21 local alabel = idna_to_ascii(normalized); |
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22 if not alabel then |
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23 module:log("error", "--%s %q fails IDNA"); |
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24 return; |
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25 end |
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26 return alabel; |
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27 end |
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28 |
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29 function module.command(arg) |
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30 local opts = argparse.parse(arg, { |
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31 short_params = { d = "domain"; p = "primary"; t = "target"; l = "ttl"; h = "help"; ["?"] = "help" }; |
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32 value_params = { domain = true; primary = true; target = true; ttl = true }; |
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33 }); |
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34 |
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35 if not arg[1] or arg[2] or not opts or opts.help or not opts.domain then |
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36 local out = opts.help and io.stdout or io.stderr; |
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37 out:write("prosodyctl mod_dnsupdate [options] virtualhost\n"); |
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38 out:write("\t-d --domain\tbase domain name *required*\n"); |
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39 out:write("\t-p --primary\tprimary DNS name server\n"); |
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40 out:write("\t-t --target\ttarget hostname for SRV\n"); |
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41 out:write("\t-l --ttl\tTTL to use\n"); |
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42 out:write("\t--each\tremove and replace individual SRV records\n"); |
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43 out:write("\t--reset\tremove and replace all SRV records\n"); |
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44 return opts and opts.help and 0 or 1; |
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45 end |
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46 |
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47 local vhost = nameprep(arg[1]); -- TODO loop over arg[]? |
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48 if not vhost then |
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49 module:log("error", "Host %q fails normalization", arg[1]); |
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50 return 1; |
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51 end |
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52 local ihost = idna_to_ascii(vhost); |
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53 if not ihost then |
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54 module:log("error", "Host %q falis IDNA", vhost); |
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55 return 1; |
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56 end |
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57 if not config.get(vhost, "defined") then |
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58 module:log("error", "Host %q is not defined in the config", vhost); |
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59 return 1; |
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60 end |
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61 |
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62 local domain = validate_dnsname_option(opts, "domain"); |
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63 if not domain then |
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64 module:log("error", "--domain is required"); |
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65 return 1; |
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66 end |
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67 local primary = validate_dnsname_option(opts, "primary") |
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68 or async.wait_for(dns:lookup_promise(domain, "SOA"):next(function(ret) return ret[1].soa.mname; end)); |
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69 if not primary then |
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70 module:log("error", "Could not discover primary name server, specify it with --primary"); |
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71 return 1; |
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72 end |
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73 local target = validate_dnsname_option(opts, "target", module:context(vhost):get_option_string("xmpp_host", ihost)); |
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74 -- TODO validate that target has A/AAAA |
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75 |
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76 local configured_ports = { |
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77 ["xmpp-client"] = module:get_option_array("c2s_ports", { 5222 }); |
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78 ["xmpp-server"] = module:get_option_array("c2s_ports", { 5269 }); |
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79 ["xmpps-client"] = module:get_option_array("c2s_direct_tls_ports", {}); |
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80 ["xmpps-server"] = module:get_option_array("c2s_ports", {}); |
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81 }; |
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82 |
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83 if opts.multiplex then |
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84 for opt, ports in pairs(configured_ports) do |
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85 ports:append(module:get_option_array(opt:sub(1, 5) == "xmpps" and "ssl_ports" or "ports", {})); |
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86 end |
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87 end |
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88 |
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89 local existing_srv = {}; |
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90 for _, service in ipairs(services) do |
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91 existing_srv[service] = dns:lookup_promise(("_%s._tcp.%s"):format(service, ihost), "SRV"); |
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92 end |
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93 |
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94 print("zone", domain); |
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95 print("server", primary); |
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96 print("ttl " .. tostring(opts.ttl or 60 * 60)); |
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97 |
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98 for _, service in ipairs(services) do |
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99 local ports = set.new(configured_ports[service]); |
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100 local records = (async.wait_for(existing_srv[service])); |
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101 local replace = opts.reset; |
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102 for _, rr in ipairs(records) do |
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103 if not ports:contains(rr.srv.port) or target ~= nameprep(rr.srv.target):gsub("%.$", "") then |
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104 if not opts.each then |
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105 replace = true; |
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106 break |
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107 end |
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108 print(("del _%s._tcp.%s IN SRV %s"):format(service, ihost, rr)); |
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109 end |
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110 end |
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111 if replace then |
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112 print(("del _%s._tcp.%s IN SRV"):format(service, ihost)); |
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113 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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114 end |
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115 end |
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116 |
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117 print("show"); |
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118 print("send"); |
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119 print("answer"); |
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120 end |