Mercurial > prosody-modules
annotate mod_email_pass/mod_email_pass.lua @ 5899:694b62d8a82f
various/README: Fix 'labels' metadata, should be a list
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 05 May 2024 17:37:38 +0200 |
| parents | c60e9943dcb9 |
| children |
| rev | line source |
|---|---|
| 1342 | 1 local dm_load = require "util.datamanager".load; |
| 2 local st = require "util.stanza"; | |
| 3 local nodeprep = require "util.encodings".stringprep.nodeprep; | |
| 4 local usermanager = require "core.usermanager"; | |
| 5 local http = require "net.http"; | |
| 6 local vcard = module:require "vcard"; | |
| 7 local datetime = require "util.datetime"; | |
| 8 local timer = require "util.timer"; | |
| 9 local jidutil = require "util.jid"; | |
| 10 | |
| 11 -- SMTP related params. Readed from config | |
| 12 local os_time = os.time; | |
| 13 local smtp = require "socket.smtp"; | |
| 14 local smtp_server = module:get_option_string("smtp_server", "localhost"); | |
| 15 local smtp_port = module:get_option_string("smtp_port", "25"); | |
| 16 local smtp_ssl = module:get_option_boolean("smtp_ssl", false); | |
| 17 local smtp_user = module:get_option_string("smtp_username"); | |
| 18 local smtp_pass = module:get_option_string("smtp_password"); | |
| 19 local smtp_address = module:get_option("smtp_from") or ((smtp_user or "no-responder").."@"..(smtp_server or module.host)); | |
| 20 local mail_subject = module:get_option_string("msg_subject") | |
| 21 local mail_body = module:get_option_string("msg_body"); | |
| 22 local url_path = module:get_option_string("url_path", "/resetpass"); | |
| 23 | |
| 24 | |
| 25 -- This table has the tokens submited by the server | |
| 26 tokens_mails = {}; | |
| 27 tokens_expiration = {}; | |
| 28 | |
|
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29 -- URL |
| 1342 | 30 local https_host = module:get_option_string("https_host"); |
| 31 local http_host = module:get_option_string("http_host"); | |
| 32 local https_port = module:get_option("https_ports", { 443 }); | |
| 33 local http_port = module:get_option("http_ports", { 80 }); | |
| 34 | |
| 35 local timer_repeat = 120; -- repeat after 120 secs | |
| 36 | |
| 37 function enablessl() | |
| 38 local sock = socket.tcp() | |
| 39 return setmetatable({ | |
| 40 connect = function(_, host, port) | |
| 41 local r, e = sock:connect(host, port) | |
| 42 if not r then return r, e end | |
| 43 sock = ssl.wrap(sock, {mode='client', protocol='tlsv1'}) | |
| 44 return sock:dohandshake() | |
| 45 end | |
| 46 }, { | |
| 47 __index = function(t,n) | |
| 48 return function(_, ...) | |
| 49 return sock[n](sock, ...) | |
| 50 end | |
| 51 end | |
| 52 }) | |
| 53 end | |
| 54 | |
| 55 function template(data) | |
| 56 -- Like util.template, but deals with plain text | |
| 57 return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end } | |
| 58 end | |
| 59 | |
| 60 local function get_template(name, extension) | |
| 61 local fh = assert(module:load_resource("templates/"..name..extension)); | |
| 62 local data = assert(fh:read("*a")); | |
| 63 fh:close(); | |
| 64 return template(data); | |
| 65 end | |
| 66 | |
| 67 local function render(template, data) | |
| 68 return tostring(template.apply(data)); | |
| 69 end | |
| 70 | |
| 71 function send_email(address, smtp_address, message_text, subject) | |
| 72 local rcpt = "<"..address..">"; | |
| 73 | |
| 74 local mesgt = { | |
| 75 headers = { | |
| 76 to = address; | |
| 77 subject = subject or ("Jabber password reset "..jid_bare(from_address)); | |
| 78 }; | |
| 79 body = message_text; | |
| 80 }; | |
| 81 local ok, err = nil; | |
| 82 | |
| 83 if not smtp_ssl then | |
| 84 ok, err = smtp.send{ from = smtp_address, rcpt = rcpt, source = smtp.message(mesgt), | |
| 85 server = smtp_server, user = smtp_user, password = smtp_pass, port = 25 }; | |
| 86 else | |
| 87 ok, err = smtp.send{ from = smtp_address, rcpt = rcpt, source = smtp.message(mesgt), | |
| 88 server = smtp_server, user = smtp_user, password = smtp_pass, port = smtp_port, create = enablessl }; | |
| 89 end | |
| 90 | |
| 91 if not ok then | |
| 92 module:log("error", "Failed to deliver to %s: %s", tostring(address), tostring(err)); | |
| 93 return; | |
| 94 end | |
| 95 return true; | |
| 96 end | |
| 97 | |
| 98 local vCard_mt = { | |
| 99 __index = function(t, k) | |
| 100 if type(k) ~= "string" then return nil end | |
| 101 for i=1,#t do | |
| 102 local t_i = rawget(t, i); | |
| 103 if t_i and t_i.name == k then | |
| 104 rawset(t, k, t_i); | |
| 105 return t_i; | |
| 106 end | |
| 107 end | |
| 108 end | |
| 109 }; | |
| 110 | |
| 111 local function get_user_vcard(user, host) | |
| 112 local vCard = dm_load(user, host or base_host, "vcard"); | |
| 113 if vCard then | |
| 114 vCard = st.deserialize(vCard); | |
| 115 vCard = vcard.from_xep54(vCard); | |
| 116 return setmetatable(vCard, vCard_mt); | |
| 117 end | |
| 118 end | |
| 119 | |
| 120 local changepass_tpl = get_template("changepass",".html"); | |
| 121 local sendmail_success_tpl = get_template("sendmailok",".html"); | |
| 122 local reset_success_tpl = get_template("resetok",".html"); | |
| 123 local token_tpl = get_template("token",".html"); | |
| 124 | |
| 125 function generate_page(event, display_options) | |
| 126 local request = event.request; | |
| 127 | |
| 128 return render(changepass_tpl, { | |
| 129 path = request.path; hostname = module.host; | |
| 130 notice = display_options and display_options.register_error or ""; | |
| 131 }) | |
| 132 end | |
| 133 | |
| 134 function generate_token_page(event, display_options) | |
| 135 local request = event.request; | |
| 136 | |
| 137 return render(token_tpl, { | |
| 138 path = request.path; hostname = module.host; | |
| 139 token = request.url.query; | |
| 140 notice = display_options and display_options.register_error or ""; | |
| 141 }) | |
| 142 end | |
| 143 | |
| 144 function generateToken(address) | |
| 145 math.randomseed(os.time()) | |
| 146 length = 16 | |
| 147 if length < 1 then return nil end | |
| 148 local array = {} | |
| 149 for i = 1, length, 2 do | |
| 150 array[i] = string.char(math.random(48,57)) | |
| 151 array[i+1] = string.char(math.random(97,122)) | |
| 152 end | |
| 153 local token = table.concat(array); | |
| 154 if not tokens_mails[token] then | |
| 155 | |
| 156 tokens_mails[token] = address; | |
| 157 tokens_expiration[token] = os.time(); | |
| 158 return token | |
| 159 else | |
| 160 module:log("error", "Reset password token collision: '%s'", token); | |
| 161 return generateToken(address) | |
| 162 end | |
| 163 end | |
| 164 | |
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165 function isExpired(token) |
| 1342 | 166 if not tokens_expiration[token] then |
| 167 return nil; | |
| 168 end | |
| 169 if os.difftime(os.time(), tokens_expiration[token]) < 86400 then -- 86400 secs == 24h | |
| 170 -- token is valid yet | |
| 171 return nil; | |
| 172 else | |
| 173 -- token invalid, we can create a fresh one. | |
| 174 return true; | |
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175 end |
| 1342 | 176 end |
| 177 | |
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parents:
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178 -- Expire tokens |
| 1342 | 179 expireTokens = function() |
| 180 for token,value in pairs(tokens_mails) do | |
| 181 if isExpired(token) then | |
| 182 module:log("info","Expiring password reset request from user '%s', not used.", tokens_mails[token]); | |
| 183 tokens_mails[token] = nil; | |
| 184 tokens_expiration[token] = nil; | |
| 185 end | |
| 186 end | |
| 187 return timer_repeat; | |
| 188 end | |
| 189 | |
| 190 -- Check if a user has a active token not used yet. | |
| 191 function hasTokenActive(address) | |
| 192 for token,value in pairs(tokens_mails) do | |
| 193 if address == value and not isExpired(token) then | |
| 194 return token; | |
| 195 end | |
| 196 end | |
| 197 return nil; | |
| 198 end | |
| 199 | |
| 200 function generateUrl(token) | |
| 201 local url; | |
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parents:
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202 |
| 1342 | 203 if https_host then |
| 204 url = "https://" .. https_host; | |
| 205 else | |
| 206 url = "http://" .. http_host; | |
| 207 end | |
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parents:
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changeset
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208 |
| 1342 | 209 if https_port then |
| 210 url = url .. ":" .. https_port[1]; | |
| 211 else | |
| 212 url = url .. ":" .. http_port[1]; | |
| 213 end | |
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parents:
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changeset
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214 |
| 1342 | 215 url = url .. url_path .. "token.html?" .. token; |
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parents:
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diff
changeset
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216 |
| 1342 | 217 return url; |
| 218 end | |
| 219 | |
| 220 function sendMessage(jid, subject, message) | |
| 221 local msg = st.message({ from = module.host; to = jid; }): | |
| 222 tag("subject"):text(subject):up(): | |
| 223 tag("body"):text(message); | |
| 224 module:send(msg); | |
| 225 end | |
| 226 | |
| 227 function send_token_mail(form, origin) | |
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228 local prepped_username = nodeprep(form.username); |
| 1342 | 229 local prepped_mail = form.email; |
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230 local jid = prepped_username .. "@" .. module.host; |
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parents:
1342
diff
changeset
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231 |
| 1342 | 232 if not prepped_username then |
| 233 return nil, "El usuario contiene caracteres incorrectos"; | |
| 234 end | |
| 235 if #prepped_username == 0 then | |
| 236 return nil, "El campo usuario está vacio"; | |
| 237 end | |
| 238 if not usermanager.user_exists(prepped_username, module.host) then | |
| 239 return nil, "El usuario NO existe"; | |
| 240 end | |
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parents:
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241 |
| 1342 | 242 if #prepped_mail == 0 then |
| 243 return nil, "El campo email está vacio"; | |
| 244 end | |
| 245 | |
| 246 local vcarduser = get_user_vcard(prepped_username, module.host); | |
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parents:
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247 |
| 1342 | 248 if not vcarduser then |
| 249 return nil, "User has not vCard"; | |
| 250 else | |
| 251 if not vcarduser.EMAIL then | |
| 252 return nil, "Esa cuente no tiene ningún email configurado en su vCard"; | |
| 253 end | |
| 254 | |
| 255 email = string.lower(vcarduser.EMAIL[1]); | |
| 256 | |
| 257 if email ~= string.lower(prepped_mail) then | |
| 258 return nil, "Dirección eMail incorrecta"; | |
| 259 end | |
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parents:
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diff
changeset
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260 |
| 1342 | 261 -- Check if has already a valid token, not used yet. |
| 262 if hasTokenActive(jid) then | |
| 263 local valid_until = tokens_expiration[hasTokenActive(jid)] + 86400; | |
| 264 return nil, "Ya tienes una petición de restablecimiento de clave válida hasta: " .. datetime.date(valid_until) .. " " .. datetime.time(valid_until); | |
| 265 end | |
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parents:
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diff
changeset
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266 |
| 1342 | 267 local url_token = generateToken(jid); |
| 268 local url = generateUrl(url_token); | |
| 269 local email_body = render(get_template("sendtoken",".mail"), {jid = jid, url = url} ); | |
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parents:
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270 |
| 1342 | 271 module:log("info", "Sending password reset mail to user %s", jid); |
| 272 send_email(email, smtp_address, email_body, mail_subject); | |
| 273 return "ok"; | |
| 274 end | |
| 275 | |
| 276 end | |
| 277 | |
| 278 function reset_password_with_token(form, origin) | |
| 279 local token = form.token; | |
| 280 local password = form.newpassword; | |
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parents:
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diff
changeset
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281 |
| 1342 | 282 if not token then |
| 283 return nil, "El Token es inválido"; | |
| 284 end | |
| 285 if not tokens_mails[token] then | |
| 286 return nil, "El Token no existe o ya fué usado"; | |
| 287 end | |
| 288 if not password then | |
| 289 return nil, "La campo clave no puede estar vacio"; | |
| 290 end | |
| 291 if #password < 5 then | |
| 292 return nil, "La clave debe tener una longitud de al menos 5 caracteres"; | |
| 293 end | |
| 294 local jid = tokens_mails[token]; | |
| 295 local user, host, resource = jidutil.split(jid); | |
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296 |
| 1342 | 297 usermanager.set_password(user, password, host); |
| 298 module:log("info", "Password changed with token for user %s", jid); | |
| 299 tokens_mails[token] = nil; | |
| 300 tokens_expiration[token] = nil; | |
| 301 sendMessage(jid, mail_subject, mail_body); | |
| 302 return "ok"; | |
| 303 end | |
| 304 | |
| 305 function generate_success(event, form) | |
| 306 return render(sendmail_success_tpl, { jid = nodeprep(form.username).."@"..module.host }); | |
| 307 end | |
| 308 | |
| 309 function generate_register_response(event, form, ok, err) | |
| 310 local message; | |
| 311 if ok then | |
| 312 return generate_success(event, form); | |
| 313 else | |
| 314 return generate_page(event, { register_error = err }); | |
| 315 end | |
| 316 end | |
| 317 | |
| 318 function handle_form_token(event) | |
| 319 local request, response = event.request, event.response; | |
| 320 local form = http.formdecode(request.body); | |
| 321 | |
| 322 local token_ok, token_err = send_token_mail(form, request); | |
| 323 response:send(generate_register_response(event, form, token_ok, token_err)); | |
| 324 | |
| 325 return true; -- Leave connection open until we respond above | |
| 326 end | |
| 327 | |
| 328 function generate_reset_success(event, form) | |
| 329 return render(reset_success_tpl, { }); | |
| 330 end | |
| 331 | |
| 332 function generate_reset_response(event, form, ok, err) | |
| 333 local message; | |
| 334 if ok then | |
| 335 return generate_reset_success(event, form); | |
| 336 else | |
| 337 return generate_token_page(event, { register_error = err }); | |
| 338 end | |
| 339 end | |
| 340 | |
| 341 function handle_form_reset(event) | |
| 342 local request, response = event.request, event.response; | |
| 343 local form = http.formdecode(request.body); | |
| 344 | |
| 345 local reset_ok, reset_err = reset_password_with_token(form, request); | |
| 346 response:send(generate_reset_response(event, form, reset_ok, reset_err)); | |
| 347 | |
| 348 return true; -- Leave connection open until we respond above | |
| 349 | |
| 350 end | |
| 351 | |
| 352 timer.add_task(timer_repeat, expireTokens); | |
| 353 | |
| 354 module:provides("http", { | |
| 355 default_path = url_path; | |
| 356 route = { | |
| 357 ["GET /style.css"] = render(get_template("style",".css"), {}); | |
| 358 ["GET /token.html"] = generate_token_page; | |
| 359 ["GET /"] = generate_page; | |
| 360 ["POST /token.html"] = handle_form_reset; | |
| 361 ["POST /"] = handle_form_token; | |
| 362 }; | |
| 363 }); | |
| 364 | |
| 365 |