prosody
7e9ebdc75ce4
plugins/mod_admin_socket.lua

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plugins/mod_admin_socket.lua @ 12480:7e9ebdc75ce4

net: isolate LuaSec-specifics For this, various accessor functions are now provided directly on the sockets, which reach down into the LuaSec implementation to obtain the information. While this may seem of little gain at first, it hides the implementation detail of the LuaSec+LuaSocket combination that the actual socket and the TLS layer are separate objects. The net gain here is that an alternative implementation does not have to emulate that specific implementation detail and "only" has to expose LuaSec-compatible data structures on the new functions.
author Jonas Schäfer <jonas@wielicki.name>
date Wed, 27 Apr 2022 17:44:14 +0200
parent 12418:dd47adf74e93
child 12852:c35afa353f8f
child 12887:68df46926c26
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1 module:set_global();
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2
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3 local have_unix, unix = pcall(require, "socket.unix");
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4
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5 if have_unix and type(unix) == "function" then
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6 -- COMPAT #1717
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7 -- Before the introduction of datagram support, only the stream socket
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8 -- constructor was exported instead of a module table. Due to the lack of a
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9 -- proper release of LuaSocket, distros have settled on shipping either the
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10 -- last RC tag or some commit since then.
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11 -- Here we accomodate both variants.
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12 unix = { stream = unix };
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13 end
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14 if not have_unix or type(unix) ~= "table" then
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15 module:log_status("error", "LuaSocket unix socket support not available or incompatible, ensure it is up to date");
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16 return;
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17 end
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19 local server = require "net.server";
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20
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21 local adminstream = require "util.adminstream";
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22
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23 local socket_path = module:get_option_path("admin_socket", "prosody.sock", "data");
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24
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25 local sessions = module:shared("sessions");
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26
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27 local function fire_admin_event(session, stanza)
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28 local event_data = {
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29 origin = session, stanza = stanza;
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30 };
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31 local event_name;
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32 if stanza.attr.xmlns then
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33 event_name = "admin/"..stanza.attr.xmlns..":"..stanza.name;
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34 else
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35 event_name = "admin/"..stanza.name;
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36 end
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37 module:log("debug", "Firing %s", event_name);
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38 return module:fire_event(event_name, event_data);
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39 end
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40
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41 module:hook("server-stopping", function ()
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42 for _, session in pairs(sessions) do
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43 session:close("system-shutdown");
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44 end
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45 os.remove(socket_path);
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46 end);
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47
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48 --- Unix domain socket management
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49
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50 local conn, sock;
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51
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52 local listeners = adminstream.server(sessions, fire_admin_event).listeners;
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53
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54 local function accept_connection()
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55 module:log("debug", "accepting...");
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56 local client = sock:accept();
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57 if not client then return; end
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58 server.wrapclient(client, "unix", 0, listeners, "*a");
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59 end
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60
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61 function module.load()
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62 sock = unix.stream();
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63 sock:settimeout(0);
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64 os.remove(socket_path);
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65 local ok, err = sock:bind(socket_path);
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66 if not ok then
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67 module:log_status("error", "Unable to bind admin socket %s: %s", socket_path, err);
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68 return;
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69 end
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70 local ok, err = sock:listen();
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71 if not ok then
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72 module:log_status("error", "Unable to listen on admin socket %s: %s", socket_path, err);
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73 return;
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74 end
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75 if server.wrapserver then
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76 conn = server.wrapserver(sock, socket_path, 0, listeners);
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77 else
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78 conn = server.watchfd(sock:getfd(), accept_connection);
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79 end
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80 end
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81
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82 function module.unload()
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83 if conn then
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84 conn:close();
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85 end
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86 if sock then
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87 sock:close();
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88 end
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89 os.remove(socket_path);
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90 end