Annotate

util/adminstream.lua @ 11749:83d6d6a70edf

net.http: fail open if surrounding code does not configure TLS Previously, if surrounding code was not configuring the TLS context used default in net.http, it would not validate certificates at all. This is not a security issue with prosody, because prosody updates the context with `verify = "peer"` as well as paths to CA certificates in util.startup.init_http_client. Nevertheless... Let's not leave this pitfall out there in the open.
author Jonas Schäfer <jonas@wielicki.name>
date Sun, 29 Aug 2021 15:04:47 +0200
parent 10940:18e4e446a76c
child 12094:84fd6a79cda7
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1 local st = require "util.stanza";
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2 local new_xmpp_stream = require "util.xmppstream".new;
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3 local sessionlib = require "util.session";
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4 local gettime = require "util.time".now;
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5 local runner = require "util.async".runner;
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6 local add_task = require "util.timer".add_task;
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7 local events = require "util.events";
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8 local server = require "net.server";
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10 local stream_close_timeout = 5;
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11
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12 local log = require "util.logger".init("adminstream");
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13
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14 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
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15
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16 local stream_callbacks = { default_ns = "xmpp:prosody.im/admin" };
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17
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18 function stream_callbacks.streamopened(session, attr)
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19 -- run _streamopened in async context
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20 session.thread:run({ stream = "opened", attr = attr });
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21 end
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22
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23 function stream_callbacks._streamopened(session, attr) --luacheck: ignore 212/attr
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24 if session.type ~= "client" then
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25 session:open_stream();
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26 end
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27 session.notopen = nil;
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28 end
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29
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30 function stream_callbacks.streamclosed(session, attr)
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31 -- run _streamclosed in async context
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32 session.thread:run({ stream = "closed", attr = attr });
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33 end
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34
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35 function stream_callbacks._streamclosed(session)
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36 session.log("debug", "Received </stream:stream>");
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37 session:close(false);
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38 end
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39
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40 function stream_callbacks.error(session, error, data)
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41 if error == "no-stream" then
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42 session.log("debug", "Invalid opening stream header (%s)", (data:gsub("^([^\1]+)\1", "{%1}")));
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43 session:close("invalid-namespace");
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44 elseif error == "parse-error" then
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45 session.log("debug", "Client XML parse error: %s", data);
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46 session:close("not-well-formed");
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47 elseif error == "stream-error" then
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48 local condition, text = "undefined-condition";
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49 for child in data:childtags(nil, xmlns_xmpp_streams) do
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50 if child.name ~= "text" then
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51 condition = child.name;
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52 else
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53 text = child:get_text();
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54 end
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55 if condition ~= "undefined-condition" and text then
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56 break;
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57 end
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58 end
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59 text = condition .. (text and (" ("..text..")") or "");
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60 session.log("info", "Session closed by remote with error: %s", text);
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61 session:close(nil, text);
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62 end
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63 end
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64
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65 function stream_callbacks.handlestanza(session, stanza)
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66 session.thread:run(stanza);
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67 end
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68
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69 local runner_callbacks = {};
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70
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71 function runner_callbacks:error(err)
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72 self.data.log("error", "Traceback[c2s]: %s", err);
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73 end
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74
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75 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
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76
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77 local function destroy_session(session, reason)
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78 if session.destroyed then return; end
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79 session.destroyed = true;
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80 session.log("debug", "Destroying session: %s", reason or "unknown reason");
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81 end
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82
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83 local function session_close(session, reason)
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84 local log = session.log or log;
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85 if session.conn then
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86 if session.notopen then
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87 session:open_stream();
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88 end
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89 if reason then -- nil == no err, initiated by us, false == initiated by client
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90 local stream_error = st.stanza("stream:error");
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91 if type(reason) == "string" then -- assume stream error
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92 stream_error:tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' });
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93 elseif type(reason) == "table" then
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94 if reason.condition then
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95 stream_error:tag(reason.condition, stream_xmlns_attr):up();
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96 if reason.text then
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97 stream_error:tag("text", stream_xmlns_attr):text(reason.text):up();
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98 end
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99 if reason.extra then
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100 stream_error:add_child(reason.extra);
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101 end
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102 elseif reason.name then -- a stanza
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103 stream_error = reason;
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104 end
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105 end
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106 stream_error = tostring(stream_error);
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107 log("debug", "Disconnecting client, <stream:error> is: %s", stream_error);
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108 session.send(stream_error);
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109 end
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110
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111 session.send("</stream:stream>");
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112 function session.send() return false; end
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113
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114 local reason_text = (reason and (reason.name or reason.text or reason.condition)) or reason;
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115 session.log("debug", "c2s stream for %s closed: %s", session.full_jid or session.ip or "<unknown>", reason_text or "session closed");
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116
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117 -- Authenticated incoming stream may still be sending us stanzas, so wait for </stream:stream> from remote
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118 local conn = session.conn;
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diff changeset
119 if reason_text == nil and not session.notopen and session.type == "c2s" then
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120 -- Grace time to process data from authenticated cleanly-closed stream
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121 add_task(stream_close_timeout, function ()
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122 if not session.destroyed then
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123 session.log("warn", "Failed to receive a stream close response, closing connection anyway...");
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124 destroy_session(session);
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diff changeset
125 conn:close();
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diff changeset
126 end
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diff changeset
127 end);
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diff changeset
128 else
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parents:
diff changeset
129 destroy_session(session, reason_text);
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parents:
diff changeset
130 conn:close();
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parents:
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131 end
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132 else
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133 local reason_text = (reason and (reason.name or reason.text or reason.condition)) or reason;
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134 destroy_session(session, reason_text);
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135 end
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136 end
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diff changeset
137
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138 --- Public methods
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139
10875
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140 local function new_connection(socket_path, listeners)
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141 local have_unix, unix = pcall(require, "socket.unix");
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142 if type(unix) ~= "table" then
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143 have_unix = false;
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144 end
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145 local conn, sock;
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146
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147 return {
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148 connect = function ()
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149 if not have_unix then
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150 return nil, "no unix socket support";
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151 end
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152 if sock or conn then
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153 return nil, "already connected";
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154 end
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diff changeset
155 sock = unix.stream();
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156 sock:settimeout(0);
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157 local ok, err = sock:connect(socket_path);
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158 if not ok then
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159 return nil, err;
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160 end
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diff changeset
161 conn = server.wrapclient(sock, nil, nil, listeners, "*a");
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162 return true;
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163 end;
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164 disconnect = function ()
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diff changeset
165 if conn then
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diff changeset
166 conn:close();
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diff changeset
167 conn = nil;
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diff changeset
168 end
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diff changeset
169 if sock then
09674bbb833f util.prosodyctl.shell, util.adminstream: Move connection logic into adminstream for easier reuse
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diff changeset
170 sock:close();
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171 sock = nil;
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diff changeset
172 end
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173 return true;
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diff changeset
174 end;
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175 };
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176 end
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diff changeset
177
10855
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178 local function new_server(sessions, stanza_handler)
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179 local listeners = {};
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180
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181 function listeners.onconnect(conn)
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182 log("debug", "New connection");
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183 local session = sessionlib.new("admin");
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184 sessionlib.set_id(session);
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185 sessionlib.set_logger(session);
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186 sessionlib.set_conn(session, conn);
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187
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188 session.conntime = gettime();
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189 session.type = "admin";
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190
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diff changeset
191 local stream = new_xmpp_stream(session, stream_callbacks);
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192 session.stream = stream;
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193 session.notopen = true;
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diff changeset
194
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diff changeset
195 session.thread = runner(function (stanza)
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diff changeset
196 if st.is_stanza(stanza) then
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diff changeset
197 stanza_handler(session, stanza);
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diff changeset
198 elseif stanza.stream == "opened" then
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diff changeset
199 stream_callbacks._streamopened(session, stanza.attr);
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diff changeset
200 elseif stanza.stream == "closed" then
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
201 stream_callbacks._streamclosed(session, stanza.attr);
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parents:
diff changeset
202 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
203 end, runner_callbacks, session);
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
204
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
205 function session.data(data)
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diff changeset
206 -- Parse the data, which will store stanzas in session.pending_stanzas
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diff changeset
207 if data then
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
208 local ok, err = stream:feed(data);
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
209 if not ok then
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parents:
diff changeset
210 session.log("debug", "Received invalid XML (%s) %d bytes: %q", err, #data, data:sub(1, 300));
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
211 session:close("not-well-formed");
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
212 end
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parents:
diff changeset
213 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
215
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
216 session.close = session_close;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
217
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
218 session.send = function (t)
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parents:
diff changeset
219 session.log("debug", "Sending[%s]: %s", session.type, t.top_tag and t:top_tag() or t:match("^[^>]*>?"));
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
220 return session.rawsend(tostring(t));
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
221 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
223 function session.rawsend(t)
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
224 local ret, err = conn:write(t);
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
225 if not ret then
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
226 session.log("debug", "Error writing to connection: %s", err);
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
227 return false, err;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
228 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
229 return true;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
230 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
231
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
232 sessions[conn] = session;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
233 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
234
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
235 function listeners.onincoming(conn, data)
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
236 local session = sessions[conn];
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
237 if session then
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238 session.data(data);
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
241
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
242 function listeners.ondisconnect(conn, err)
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243 local session = sessions[conn];
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
244 if session then
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
245 session.log("info", "Admin client disconnected: %s", err or "connection closed");
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246 session.conn = nil;
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247 sessions[conn] = nil;
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248 end
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249 end
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250
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251 function listeners.onreadtimeout(conn)
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252 return conn:send(" ");
10900
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253 end
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254
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255 return {
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256 listeners = listeners;
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257 };
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258 end
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259
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260 local function new_client()
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261 local client = {
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262 type = "client";
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263 events = events.new();
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264 log = log;
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265 };
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266
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267 local listeners = {};
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268
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269 function listeners.onconnect(conn)
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270 log("debug", "Connected");
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271 client.conn = conn;
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272
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273 local stream = new_xmpp_stream(client, stream_callbacks);
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274 client.stream = stream;
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275 client.notopen = true;
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276
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277 client.thread = runner(function (stanza)
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278 if st.is_stanza(stanza) then
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279 if not client.events.fire_event("received", stanza) and not stanza.attr.xmlns then
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280 client.events.fire_event("received/"..stanza.name, stanza);
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281 end
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282 elseif stanza.stream == "opened" then
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283 stream_callbacks._streamopened(client, stanza.attr);
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284 client.events.fire_event("connected");
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285 elseif stanza.stream == "closed" then
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286 client.events.fire_event("disconnected");
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287 stream_callbacks._streamclosed(client, stanza.attr);
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288 end
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289 end, runner_callbacks, client);
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290
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291 client.close = session_close;
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292
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293 function client.send(t)
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294 client.log("debug", "Sending: %s", t.top_tag and t:top_tag() or t:match("^[^>]*>?"));
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295 return client.rawsend(tostring(t));
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296 end
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297
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298 function client.rawsend(t)
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299 local ret, err = conn:write(t);
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300 if not ret then
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diff changeset
301 client.log("debug", "Error writing to connection: %s", err);
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302 return false, err;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
303 end
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parents:
diff changeset
304 return true;
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parents:
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305 end
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diff changeset
306 client.log("debug", "Opening stream...");
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parents:
diff changeset
307 client:open_stream();
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diff changeset
308 end
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309
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310 function listeners.onincoming(conn, data) --luacheck: ignore 212/conn
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311 local ok, err = client.stream:feed(data);
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diff changeset
312 if not ok then
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diff changeset
313 client.log("debug", "Received invalid XML (%s) %d bytes: %q", err, #data, data:sub(1, 300));
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parents:
diff changeset
314 client:close("not-well-formed");
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parents:
diff changeset
315 end
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parents:
diff changeset
316 end
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
317
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
318 function listeners.ondisconnect(conn, err) --luacheck: ignore 212/conn
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parents:
diff changeset
319 client.log("info", "Admin client disconnected: %s", err or "connection closed");
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parents:
diff changeset
320 client.conn = nil;
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parents:
diff changeset
321 end
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parents:
diff changeset
322
10900
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Kim Alvefur <zash@zash.se>
parents: 10892
diff changeset
323 function listeners.onreadtimeout(conn)
9e6d979dd603 util.adminstream: Set a read timeout handler
Kim Alvefur <zash@zash.se>
parents: 10892
diff changeset
324 conn:send(" ");
9e6d979dd603 util.adminstream: Set a read timeout handler
Kim Alvefur <zash@zash.se>
parents: 10892
diff changeset
325 end
9e6d979dd603 util.adminstream: Set a read timeout handler
Kim Alvefur <zash@zash.se>
parents: 10892
diff changeset
326
10855
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parents:
diff changeset
327 client.listeners = listeners;
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parents:
diff changeset
328
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parents:
diff changeset
329 return client;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
330 end
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parents:
diff changeset
331
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
332 return {
10875
09674bbb833f util.prosodyctl.shell, util.adminstream: Move connection logic into adminstream for easier reuse
Matthew Wild <mwild1@gmail.com>
parents: 10855
diff changeset
333 connection = new_connection;
10855
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parents:
diff changeset
334 server = new_server;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
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parents:
diff changeset
335 client = new_client;
70ac7d23673d mod_admin_socket, util.adminstream: New module to manage a local unix domain socket for admin functionality
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
336 };