prosody-modules
e79f9dec35c0
mod_webpresence/mod_webpresence.lua

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mod_webpresence/mod_webpresence.lua @ 5810:e79f9dec35c0

mod_c2s_conn_throttle: Reduce log level from error->info Our general policy is that "error" should never be triggerable by remote entities, and that it is always about something that requires admin intervention. This satisfies neither condition. The "warn" level can be used for unexpected events/behaviour triggered by remote entities, and this could qualify. However I don't think failed auth attempts are unexpected enough. I selected "info" because it is what is also used for other notable session lifecycle events.
author Matthew Wild <mwild1@gmail.com>
date Thu, 07 Dec 2023 15:46:50 +0000
parent 2348:1903add39b7c
child 5588:f16720087ef2
line wrap: on
line source

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;
    };
});