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mod_email_pass/mod_email_pass.lua @ 3256:0992c0398783
mod_pubsub_post/README: Add a heading for affiliation related text
author | Kim Alvefur <zash@zash.se> |
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date | Fri, 24 Aug 2018 14:50:20 +0200 |
parent | 1345:c60e9943dcb9 |
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local dm_load = require "util.datamanager".load; local st = require "util.stanza"; local nodeprep = require "util.encodings".stringprep.nodeprep; local usermanager = require "core.usermanager"; local http = require "net.http"; local vcard = module:require "vcard"; local datetime = require "util.datetime"; local timer = require "util.timer"; local jidutil = require "util.jid"; -- SMTP related params. Readed from config local os_time = os.time; local smtp = require "socket.smtp"; local smtp_server = module:get_option_string("smtp_server", "localhost"); local smtp_port = module:get_option_string("smtp_port", "25"); local smtp_ssl = module:get_option_boolean("smtp_ssl", false); local smtp_user = module:get_option_string("smtp_username"); local smtp_pass = module:get_option_string("smtp_password"); local smtp_address = module:get_option("smtp_from") or ((smtp_user or "no-responder").."@"..(smtp_server or module.host)); local mail_subject = module:get_option_string("msg_subject") local mail_body = module:get_option_string("msg_body"); local url_path = module:get_option_string("url_path", "/resetpass"); -- This table has the tokens submited by the server tokens_mails = {}; tokens_expiration = {}; -- URL local https_host = module:get_option_string("https_host"); local http_host = module:get_option_string("http_host"); local https_port = module:get_option("https_ports", { 443 }); local http_port = module:get_option("http_ports", { 80 }); local timer_repeat = 120; -- repeat after 120 secs function enablessl() local sock = socket.tcp() return setmetatable({ connect = function(_, host, port) local r, e = sock:connect(host, port) if not r then return r, e end sock = ssl.wrap(sock, {mode='client', protocol='tlsv1'}) return sock:dohandshake() end }, { __index = function(t,n) return function(_, ...) return sock[n](sock, ...) end end }) end function template(data) -- Like util.template, but deals with plain text return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end } end local function get_template(name, extension) local fh = assert(module:load_resource("templates/"..name..extension)); local data = assert(fh:read("*a")); fh:close(); return template(data); end local function render(template, data) return tostring(template.apply(data)); end function send_email(address, smtp_address, message_text, subject) local rcpt = "<"..address..">"; local mesgt = { headers = { to = address; subject = subject or ("Jabber password reset "..jid_bare(from_address)); }; body = message_text; }; local ok, err = nil; if not smtp_ssl then ok, err = smtp.send{ from = smtp_address, rcpt = rcpt, source = smtp.message(mesgt), server = smtp_server, user = smtp_user, password = smtp_pass, port = 25 }; else ok, err = smtp.send{ from = smtp_address, rcpt = rcpt, source = smtp.message(mesgt), server = smtp_server, user = smtp_user, password = smtp_pass, port = smtp_port, create = enablessl }; end if not ok then module:log("error", "Failed to deliver to %s: %s", tostring(address), tostring(err)); return; end return true; end local vCard_mt = { __index = function(t, k) if type(k) ~= "string" then return nil end for i=1,#t do local t_i = rawget(t, i); if t_i and t_i.name == k then rawset(t, k, t_i); return t_i; end end end }; local function get_user_vcard(user, host) local vCard = dm_load(user, host or base_host, "vcard"); if vCard then vCard = st.deserialize(vCard); vCard = vcard.from_xep54(vCard); return setmetatable(vCard, vCard_mt); end end local changepass_tpl = get_template("changepass",".html"); local sendmail_success_tpl = get_template("sendmailok",".html"); local reset_success_tpl = get_template("resetok",".html"); local token_tpl = get_template("token",".html"); function generate_page(event, display_options) local request = event.request; return render(changepass_tpl, { path = request.path; hostname = module.host; notice = display_options and display_options.register_error or ""; }) end function generate_token_page(event, display_options) local request = event.request; return render(token_tpl, { path = request.path; hostname = module.host; token = request.url.query; notice = display_options and display_options.register_error or ""; }) end function generateToken(address) math.randomseed(os.time()) length = 16 if length < 1 then return nil end local array = {} for i = 1, length, 2 do array[i] = string.char(math.random(48,57)) array[i+1] = string.char(math.random(97,122)) end local token = table.concat(array); if not tokens_mails[token] then tokens_mails[token] = address; tokens_expiration[token] = os.time(); return token else module:log("error", "Reset password token collision: '%s'", token); return generateToken(address) end end function isExpired(token) if not tokens_expiration[token] then return nil; end if os.difftime(os.time(), tokens_expiration[token]) < 86400 then -- 86400 secs == 24h -- token is valid yet return nil; else -- token invalid, we can create a fresh one. return true; end end -- Expire tokens expireTokens = function() for token,value in pairs(tokens_mails) do if isExpired(token) then module:log("info","Expiring password reset request from user '%s', not used.", tokens_mails[token]); tokens_mails[token] = nil; tokens_expiration[token] = nil; end end return timer_repeat; end -- Check if a user has a active token not used yet. function hasTokenActive(address) for token,value in pairs(tokens_mails) do if address == value and not isExpired(token) then return token; end end return nil; end function generateUrl(token) local url; if https_host then url = "https://" .. https_host; else url = "http://" .. http_host; end if https_port then url = url .. ":" .. https_port[1]; else url = url .. ":" .. http_port[1]; end url = url .. url_path .. "token.html?" .. token; return url; end function sendMessage(jid, subject, message) local msg = st.message({ from = module.host; to = jid; }): tag("subject"):text(subject):up(): tag("body"):text(message); module:send(msg); end function send_token_mail(form, origin) local prepped_username = nodeprep(form.username); local prepped_mail = form.email; local jid = prepped_username .. "@" .. module.host; if not prepped_username then return nil, "El usuario contiene caracteres incorrectos"; end if #prepped_username == 0 then return nil, "El campo usuario está vacio"; end if not usermanager.user_exists(prepped_username, module.host) then return nil, "El usuario NO existe"; end if #prepped_mail == 0 then return nil, "El campo email está vacio"; end local vcarduser = get_user_vcard(prepped_username, module.host); if not vcarduser then return nil, "User has not vCard"; else if not vcarduser.EMAIL then return nil, "Esa cuente no tiene ningún email configurado en su vCard"; end email = string.lower(vcarduser.EMAIL[1]); if email ~= string.lower(prepped_mail) then return nil, "Dirección eMail incorrecta"; end -- Check if has already a valid token, not used yet. if hasTokenActive(jid) then local valid_until = tokens_expiration[hasTokenActive(jid)] + 86400; return nil, "Ya tienes una petición de restablecimiento de clave válida hasta: " .. datetime.date(valid_until) .. " " .. datetime.time(valid_until); end local url_token = generateToken(jid); local url = generateUrl(url_token); local email_body = render(get_template("sendtoken",".mail"), {jid = jid, url = url} ); module:log("info", "Sending password reset mail to user %s", jid); send_email(email, smtp_address, email_body, mail_subject); return "ok"; end end function reset_password_with_token(form, origin) local token = form.token; local password = form.newpassword; if not token then return nil, "El Token es inválido"; end if not tokens_mails[token] then return nil, "El Token no existe o ya fué usado"; end if not password then return nil, "La campo clave no puede estar vacio"; end if #password < 5 then return nil, "La clave debe tener una longitud de al menos 5 caracteres"; end local jid = tokens_mails[token]; local user, host, resource = jidutil.split(jid); usermanager.set_password(user, password, host); module:log("info", "Password changed with token for user %s", jid); tokens_mails[token] = nil; tokens_expiration[token] = nil; sendMessage(jid, mail_subject, mail_body); return "ok"; end function generate_success(event, form) return render(sendmail_success_tpl, { jid = nodeprep(form.username).."@"..module.host }); end function generate_register_response(event, form, ok, err) local message; if ok then return generate_success(event, form); else return generate_page(event, { register_error = err }); end end function handle_form_token(event) local request, response = event.request, event.response; local form = http.formdecode(request.body); local token_ok, token_err = send_token_mail(form, request); response:send(generate_register_response(event, form, token_ok, token_err)); return true; -- Leave connection open until we respond above end function generate_reset_success(event, form) return render(reset_success_tpl, { }); end function generate_reset_response(event, form, ok, err) local message; if ok then return generate_reset_success(event, form); else return generate_token_page(event, { register_error = err }); end end function handle_form_reset(event) local request, response = event.request, event.response; local form = http.formdecode(request.body); local reset_ok, reset_err = reset_password_with_token(form, request); response:send(generate_reset_response(event, form, reset_ok, reset_err)); return true; -- Leave connection open until we respond above end timer.add_task(timer_repeat, expireTokens); module:provides("http", { default_path = url_path; route = { ["GET /style.css"] = render(get_template("style",".css"), {}); ["GET /token.html"] = generate_token_page; ["GET /"] = generate_page; ["POST /token.html"] = handle_form_reset; ["POST /"] = handle_form_token; }; });