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annotate mod_message_logging/mod_message_logging.lua @ 4942:e7b9bc629ecc

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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
parents ba71d0ad5564
children
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rev   line source
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1 module:set_global();
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2
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3 local jid_bare = require "util.jid".bare;
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4 local jid_split = require "util.jid".split;
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5
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6 local stat, mkdir = require "lfs".attributes, require "lfs".mkdir;
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7
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8 -- Get a filesystem-safe string
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9 local function fsencode_char(c)
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10 return ("%%%02x"):format(c:byte());
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11 end
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12 local function fsencode(s)
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13 return (s:gsub("[^%w._-@]", fsencode_char):gsub("^%.", "_"));
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14 end
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15
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16 local log_base_path = module:get_option("message_logging_dir", prosody.paths.data.."/message_logs");
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17 mkdir(log_base_path);
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18
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19 local function get_host_path(host)
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20 return log_base_path.."/"..fsencode(host);
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21 end
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22
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23 local function get_user_path(jid)
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24 local username, host = jid_split(jid);
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25 local base = get_host_path(host)..os.date("/%Y-%m-%d");
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26 if not stat(base) then
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27 mkdir(base);
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28 end
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29 return base.."/"..fsencode(username)..".msglog";
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30 end
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31
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32 local open_files_mt = { __index = function (open_files, jid)
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33 local f, err = io.open(get_user_path(jid), "a+");
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34 if not f then
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35 module:log("error", "Failed to open message log for writing [%s]: %s", jid, err);
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36 end
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37 rawset(open_files, jid, f);
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38 return f;
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39 end };
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40
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41 -- [user@host] = filehandle
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42 local open_files = setmetatable({}, open_files_mt);
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43
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44 function close_open_files()
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45 module:log("debug", "Closing all open files");
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46 for jid, filehandle in pairs(open_files) do
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47 filehandle:close();
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48 open_files[jid] = nil;
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49 end
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50 end
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51 module:hook_global("logging-reloaded", close_open_files);
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52
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53 local function write_to_log(log_jid, jid, prefix, body)
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54 if not body then return; end
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55 local f = open_files[log_jid];
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56 if not f then return; end
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57 body = body:gsub("\n", "\n "); -- Indent newlines
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58 f:write(os.date("%H:%M:%S "), prefix or "", prefix and ": " or "", jid, ": ", body, "\n");
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59 f:flush();
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60 end
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61
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62 local function handle_incoming_message(event)
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63 local origin, stanza = event.origin, event.stanza;
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64 local message_type = stanza.attr.type;
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65
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66 if message_type == "error" then return; end
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67
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68 local from, to = jid_bare(stanza.attr.from), jid_bare(stanza.attr.to or stanza.attr.from);
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69 if message_type == "groupchat" then
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70 from = from.." <"..(select(3, jid_split(stanza.attr.from)) or "")..">";
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71 end
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72 write_to_log(to, from, "RECV", stanza:get_child_text("body"));
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73 end
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74
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75 local function handle_outgoing_message(event)
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76 local origin, stanza = event.origin, event.stanza;
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77 local message_type = stanza.attr.type;
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78
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79 if message_type == "error" then return; end
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80
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81 local from, to = jid_bare(stanza.attr.from), jid_bare(stanza.attr.to or origin.full_jid);
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82 write_to_log(from, to, "SEND", stanza:get_child_text("body"));
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83 end
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84
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85 local function handle_muc_message(event)
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86 local stanza = event.stanza;
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87 if stanza.attr.type ~= "groupchat" then return; end
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88 local room = event.room or hosts[select(2, jid_split(stanza.attr.to))].modules.muc.rooms[stanza.attr.to];
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89 if not room then return; end
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90 local nick = select(3, jid_split(room._jid_nick[stanza.attr.from]));
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91 if not nick then return; end
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92 write_to_log(room.jid, jid_bare(stanza.attr.from).." <"..nick..">", "MESG", stanza:get_child_text("body"));
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93 end
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94
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95 function module.add_host(module)
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96 local host_base_path = get_host_path(module.host);
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97 if not stat(host_base_path) then
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98 mkdir(host_base_path);
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99 end
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100
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101 if hosts[module.host].modules.muc then
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102 module:hook("message/bare", handle_muc_message, 1);
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103 else
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104 module:hook("message/bare", handle_incoming_message, 1);
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105 module:hook("message/full", handle_incoming_message, 1);
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106
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107 module:hook("pre-message/bare", handle_outgoing_message, 1);
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108 module:hook("pre-message/full", handle_outgoing_message, 1);
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109 module:hook("pre-message/host", handle_outgoing_message, 1);
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110 end
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111
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112 end
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113
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114 function module.command(arg)
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115 local command = table.remove(arg, 1);
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116 if command == "path" then
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117 print(get_user_path(arg[1]));
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118 else
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119 io.stderr:write("Unrecognised command: ", command);
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120 return 1;
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121 end
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122 return 0;
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123 end
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124
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125 function module.save()
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126 return { open_files = open_files };
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127 end
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128
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129 function module.restore(saved)
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130 open_files = setmetatable(saved.open_files or {}, open_files_mt);
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131 end