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view mod_webpresence/mod_webpresence.lua @ 5173:460f78654864

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mod_muc_rtbl: also filter messages This was a bit tricky because we don't want to run the JIDs through SHA256 on each message. Took a while to come up with this simple plan of just caching the SHA256 of the JIDs on the occupants. This will leave some dirt in the occupants after unloading the module, but that should be ok; once they cycle the room, the hashes will be gone. This is direly needed, otherwise, there is a tight race between the moderation activities and the actors joining the room.
author Jonas Schäfer <jonas@wielicki.name>
date Tue, 21 Feb 2023 21:37:27 +0100
parents 1903add39b7c
children
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module:depends("http");

local jid_split = require "util.jid".prepped_split;
local b64 = require "util.encodings".base64.encode;
local sha1 = require "util.hashes".sha1;
local stanza = require "util.stanza".stanza;
local json = require "util.json".encode_ordered;

local function require_resource(name)
    local icon_path = module:get_option_string("presence_icons", "icons");
    local f, err  = module:load_resource(icon_path.."/"..name);
    if f then
        return f:read("*a");
    end
    module:log("warn", "Failed to open image file %s", icon_path..name);
    return "";
end

local statuses = { online = {}, away = {}, xa = {}, dnd = {}, chat = {}, offline = {} };

local function handle_request(event, path)
  local status, message;
  local jid, type = path:match("([^/]+)/?(.*)$");
  if jid then
    local user, host = jid_split(jid);
    if host and not user then
        user, host = host, event.request.headers.host;
        if host then host = host:gsub(":%d+$", ""); end
    end
    if user and host then
      local user_sessions = hosts[host] and hosts[host].sessions[user];
      if user_sessions and user_sessions.top_resources then
        status = user_sessions.top_resources[1];
        if status and status.presence then
          message = status.presence:child_with_name("status");
          status = status.presence:child_with_name("show");
          if not status then
            status = "online";
          else
            status = status:get_text();
          end
          if message then
            message = message:get_text();
          end
        end
      end
    end
  end
  status = status or "offline";

  statuses[status].image = function()
    return { status_code = 200, headers = { content_type = "image/png" },
      body =  require_resource("status_"..status..".png")
    };
  end;
  statuses[status].html = function()
    local jid_hash = sha1(jid, true);
    return { status_code = 200, headers = { content_type = "text/html" },
      body =  [[<!DOCTYPE html>]]..
        tostring(
          stanza("html")
            :tag("head")
            :tag("title"):text("XMPP Status Page for "..jid):up():up()
            :tag("body")
            :tag("div", { id = jid_hash.."_status", class = "xmpp_status" })
            :tag("img", { id = jid_hash.."_img", class = "xmpp_status_image xmpp_status_"..status,
              src = "data:image/png;base64,"..b64(require_resource("status_"..status..".png")) }):up()
            :tag("span", { id = jid_hash.."_status_name", class = "xmpp_status_name" })
              :text("\194\160"..status):up()
            :tag("span", { id = jid_hash.."_status_message", class = "xmpp_status_message" })
              :text(message and "\194\160"..message.."" or "")
        )
    };
  end;
  statuses[status].text = function()
    return { status_code = 200, headers = { content_type = "text/plain" },
      body = status
    };
  end;
  statuses[status].message = function()
    return { status_code = 200, headers = { content_type = "text/plain" },
      body = (message and message or "")
    };
  end;
  statuses[status].json = function()
    return { status_code = 200, headers = { content_type = "application/json" },
      body = json({
        jid    = jid,
        show   = status,
        status = (message and message or "null")
      })
    };
  end;
  statuses[status].xml = function()
    return { status_code = 200, headers = { content_type = "application/xml" },
      body = [[<?xml version="1.0" encoding="utf-8"?>]]..
        tostring(
          stanza("result")
            :tag("jid"):text(jid):up()
            :tag("show"):text(status):up()
            :tag("status"):text(message)
        )
      };
  end

  if ((type == "") or (not statuses[status][type])) then
    type = "image"
  end;

  return statuses[status][type]();
end

module:provides("http", {
    default_path = "/status";
    route = {
        ["GET /*"] = handle_request;
    };
});