Mercurial > prosody-modules

view mod_webpresence/mod_webpresence.lua @ 4249:64aa1d9d70ac

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
mod_rest: Catch and log errors in callback promise chain From the code it looks like it should be possible to reply to an error stanza, but it did not. Turns out I was saved by my local developer mode module which throws errors if an attempt is made to create an errror reply to an error stanza. However nothing collects this error from the promise, so all I got was confusion.
author Kim Alvefur <zash@zash.se>
date Sun, 15 Nov 2020 16:25:49 +0100
parents 1903add39b7c
children
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;
    };
});