Mercurial > prosody-modules

annotate mod_register_web/mod_register_web.lua @ 3725:19e43b7a969d

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mod_register_web: Enforce strict username validation (on trunk, ignored otherwise)
author Kim Alvefur <zash@zash.se>
date Fri, 01 Nov 2019 23:21:50 +0100
parents 1c3c7d73c5a6
children cf3247ec5e01
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rev   line source
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c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local captcha_options = module:get_option("captcha_options", {});
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03595194075a mod_register_web: nodeprep username before creating user (thanks IRON)
Matthew Wild <mwild1@gmail.com>
parents: 653
diff changeset
2 local nodeprep = require "util.encodings".stringprep.nodeprep;
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a3766d3baacb mod_register_web: Import usermanager and util.http into locals
Kim Alvefur <zash@zash.se>
parents: 1223
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3 local usermanager = require "core.usermanager";
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7d864a03b509 mod_register_web: Import missing datamanager
Michel Le Bihan <michel@lebihan.pl>
parents: 2733
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4 local datamanager = require "util.datamanager";
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34fbe58d19da mod_register_web: Use net.http instead of util.http, as we need to make requests (thanks dustin)
Matthew Wild <mwild1@gmail.com>
parents: 1239
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5 local http = require "net.http";
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742f3dc601b5 mod_register_web: Use path separator from package.config
Kim Alvefur <zash@zash.se>
parents: 1320
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6 local path_sep = package.config:sub(1,1);
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32604bf33a4c mod_register_web: Switch to the new reCAPTCHA API, including support for "nocaptcha" when users are already signed in to Google.
Thijs Alkemade <me@thijsalkema.de>
parents: 1618
diff changeset
7 local json = require "util.json".decode;
32604bf33a4c mod_register_web: Switch to the new reCAPTCHA API, including support for "nocaptcha" when users are already signed in to Google.
Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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8 local t_concat = table.concat;
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c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
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9
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866167118d23 mod_register_web: Add soft dependency on mod_register_limits (0.11+)
Kim Alvefur <zash@zash.se>
parents: 2999
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10 pcall(function ()
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11 module:depends("register_limits");
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12 end);
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13
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14 module:depends"http";
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15
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16 local extra_fields = {
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17 nick = true; name = true; first = true; last = true; email = true;
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18 address = true; city = true; state = true; zip = true;
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19 phone = true; url = true; date = true;
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20 }
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21
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1aa894db3585 mod_register_web: Add option for specifying path to templates
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22 local template_path = module:get_option_string("register_web_template", "templates");
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23 function template(data)
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24 -- Like util.template, but deals with plain text
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25 return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end }
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26 end
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27
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28 local function get_template(name)
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29 local fh = assert(module:load_resource(template_path..path_sep..name..".html"));
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30 local data = assert(fh:read("*a"));
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31 fh:close();
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32 return template(data);
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33 end
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34
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35 local function render(template, data)
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36 return tostring(template.apply(data));
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37 end
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38
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39 local register_tpl = get_template "register";
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40 local success_tpl = get_template "success";
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parents: 1227
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41
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1c3c7d73c5a6 mod_register_web: Fix to use real client IP in case of proxy forwarding (thanks Sebastian)
Kim Alvefur <zash@zash.se>
parents: 3679
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42 -- COMPAT `or request.conn:ip()`
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43
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44 if next(captcha_options) ~= nil then
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45 local recaptcha_tpl = get_template "recaptcha";
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46
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47 function generate_captcha(display_options)
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48 return recaptcha_tpl.apply(setmetatable({
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57d4680b86a4 mod_register_web: Normalize indentation [luacheck]
Kim Alvefur <zash@zash.se>
parents: 2739
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49 recaptcha_display_error = display_options and display_options.recaptcha_error
57d4680b86a4 mod_register_web: Normalize indentation [luacheck]
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parents: 2739
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50 and ("&error="..display_options.recaptcha_error) or "";
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parents: 2739
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51 }, {
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049975800d1c mod_register_web: Remove unused variables [luacheck]
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parents: 2924
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52 __index = function (_, k)
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parents: 2739
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53 if captcha_options[k] then return captcha_options[k]; end
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parents: 2739
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54 module:log("error", "Missing parameter from captcha_options: %s", k);
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55 end
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parents: 1227
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56 }));
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57 end
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58 function verify_captcha(request, form, callback)
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Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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59 http.request("https://www.google.com/recaptcha/api/siteverify", {
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60 body = http.formencode {
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Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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61 secret = captcha_options.recaptcha_private_key;
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1c3c7d73c5a6 mod_register_web: Fix to use real client IP in case of proxy forwarding (thanks Sebastian)
Kim Alvefur <zash@zash.se>
parents: 3679
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62 remoteip = request.ip or request.conn:ip();
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Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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63 response = form["g-recaptcha-response"];
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64 };
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65 }, function (verify_result, code)
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Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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66 local result = json(verify_result);
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d631fd9a3300 mod_register_web: Handle errors contacting upstream API
Matthew Wild <mwild1@gmail.com>
parents: 2929
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67 if not result then
d631fd9a3300 mod_register_web: Handle errors contacting upstream API
Matthew Wild <mwild1@gmail.com>
parents: 2929
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68 module:log("warn", "Unable to decode response from recaptcha: [%d] %s", code, verify_result);
d631fd9a3300 mod_register_web: Handle errors contacting upstream API
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parents: 2929
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69 callback(false, "Captcha API error");
d631fd9a3300 mod_register_web: Handle errors contacting upstream API
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parents: 2929
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70 elseif result.success == true then
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71 callback(true);
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72 else
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Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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73 callback(false, t_concat(result["error-codes"]));
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74 end
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parents: 1227
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75 end);
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76 end
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77 else
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78 module:log("debug", "No Recaptcha options set, using fallback captcha")
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79 local random = math.random;
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80 local hmac_sha1 = require "util.hashes".hmac_sha1;
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81 local secret = require "util.uuid".generate()
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82 local ops = { '+', '-' };
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83 local captcha_tpl = get_template "simplecaptcha";
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84 function generate_captcha()
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85 local op = ops[random(1, #ops)];
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86 local x, y = random(1, 9)
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87 repeat
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88 y = random(1, 9);
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89 until x ~= y;
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90 local answer;
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91 if op == '+' then
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92 answer = x + y;
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93 elseif op == '-' then
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parents: 1227
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94 if x < y then
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95 -- Avoid negative numbers
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96 x, y = y, x;
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97 end
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98 answer = x - y;
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99 end
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100 local challenge = hmac_sha1(secret, answer, true);
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101 return captcha_tpl.apply {
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102 op = op, x = x, y = y, challenge = challenge;
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103 };
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104 end
1234
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105 function verify_captcha(request, form, callback)
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106 if hmac_sha1(secret, form.captcha_reply or "", true) == form.captcha_challenge then
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107 callback(true);
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108 else
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109 callback(false, "Captcha verification failed");
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110 end
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111 end
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parents: 1225
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112 end
653
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
113
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parents:
diff changeset
114 function generate_page(event, display_options)
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115 local request, response = event.request, event.response;
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116
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117 response.headers.content_type = "text/html; charset=utf-8";
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118 return render(register_tpl, {
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parents: 1226
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119 path = request.path; hostname = module.host;
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parents: 1226
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120 notice = display_options and display_options.register_error or "";
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121 captcha = generate_captcha(display_options);
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122 })
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
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123 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
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124
1320
e670d4cc5027 mod_register_web: Pass request around so IP address can be reported
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parents: 1247
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125 function register_user(form, origin)
2924
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Kim Alvefur <zash@zash.se>
parents: 2923
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126 local username = form.username;
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127 local password = form.password;
edf5e8a77d0c mod_register_web: Remove username and password from form data and provide the rest in pre-registration event
Kim Alvefur <zash@zash.se>
parents: 2923
diff changeset
128 local confirm_password = form.confirm_password;
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
129 local jid = nil;
2924
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Kim Alvefur <zash@zash.se>
parents: 2923
diff changeset
130 form.username, form.password, form.confirm_password = nil, nil, nil;
edf5e8a77d0c mod_register_web: Remove username and password from form data and provide the rest in pre-registration event
Kim Alvefur <zash@zash.se>
parents: 2923
diff changeset
131
3725
19e43b7a969d mod_register_web: Enforce strict username validation (on trunk, ignored otherwise)
Kim Alvefur <zash@zash.se>
parents: 3724
diff changeset
132 local prepped_username = nodeprep(username, true);
1230
f7c561fbd5a6 mod_register_web: Friendly error messages if the username is taken or failed nodeprep
Kim Alvefur <zash@zash.se>
parents: 1229
diff changeset
133 if not prepped_username then
f7c561fbd5a6 mod_register_web: Friendly error messages if the username is taken or failed nodeprep
Kim Alvefur <zash@zash.se>
parents: 1229
diff changeset
134 return nil, "Username contains forbidden characters";
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Kim Alvefur <zash@zash.se>
parents: 1229
diff changeset
135 end
1236
59332e0bfbdc mod_register_web: Check for empty username
Kim Alvefur <zash@zash.se>
parents: 1235
diff changeset
136 if #prepped_username == 0 then
59332e0bfbdc mod_register_web: Check for empty username
Kim Alvefur <zash@zash.se>
parents: 1235
diff changeset
137 return nil, "The username field was empty";
59332e0bfbdc mod_register_web: Check for empty username
Kim Alvefur <zash@zash.se>
parents: 1235
diff changeset
138 end
1229
12e3bc0fd6ed mod_register_web: Indentation fix
Kim Alvefur <zash@zash.se>
parents: 1228
diff changeset
139 if usermanager.user_exists(prepped_username, module.host) then
1230
f7c561fbd5a6 mod_register_web: Friendly error messages if the username is taken or failed nodeprep
Kim Alvefur <zash@zash.se>
parents: 1229
diff changeset
140 return nil, "Username already taken";
1229
12e3bc0fd6ed mod_register_web: Indentation fix
Kim Alvefur <zash@zash.se>
parents: 1228
diff changeset
141 end
3724
1c3c7d73c5a6 mod_register_web: Fix to use real client IP in case of proxy forwarding (thanks Sebastian)
Kim Alvefur <zash@zash.se>
parents: 3679
diff changeset
142 local registering = { username = prepped_username , host = module.host, additional = form, ip = origin.ip or origin.conn:ip(), allowed = true }
1237
c669cb78b293 mod_register_web: Fire user-registering event like mod_register
Kim Alvefur <zash@zash.se>
parents: 1236
diff changeset
143 module:fire_event("user-registering", registering);
c669cb78b293 mod_register_web: Fire user-registering event like mod_register
Kim Alvefur <zash@zash.se>
parents: 1236
diff changeset
144 if not registering.allowed then
2923
9d53134a0b29 mod_register_web: Return reason for rejection if one was provided by another plugin during pre-registration checks
Kim Alvefur <zash@zash.se>
parents: 2922
diff changeset
145 return nil, registering.reason or "Registration not allowed";
1237
c669cb78b293 mod_register_web: Fire user-registering event like mod_register
Kim Alvefur <zash@zash.se>
parents: 1236
diff changeset
146 end
2924
edf5e8a77d0c mod_register_web: Remove username and password from form data and provide the rest in pre-registration event
Kim Alvefur <zash@zash.se>
parents: 2923
diff changeset
147 if confirm_password ~= password then
2733
c8161146c698 mod_register_web: Add password confirmation field
Michel Le Bihan <michel@lebihan.pl>
parents: 1778
diff changeset
148 return nil, "Passwords don't match";
c8161146c698 mod_register_web: Add password confirmation field
Michel Le Bihan <michel@lebihan.pl>
parents: 1778
diff changeset
149 end
2924
edf5e8a77d0c mod_register_web: Remove username and password from form data and provide the rest in pre-registration event
Kim Alvefur <zash@zash.se>
parents: 2923
diff changeset
150 local ok, err = usermanager.create_user(prepped_username, password, module.host);
1232
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
151 if ok then
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
152 jid = prepped_username.."@"..module.host
1235
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
153 local extra_data = {};
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
154 for field in pairs(extra_fields) do
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
155 local field_value = form[field];
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
156 if field_value and #field_value > 0 then
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
157 extra_data[field] = field_value;
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
158 end
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
159 end
1238
752285859607 mod_register_web: Use correct variables
Kim Alvefur <zash@zash.se>
parents: 1237
diff changeset
160 if next(extra_data) ~= nil then
1235
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
161 datamanager.store(prepped_username, module.host, "account_details", extra_data);
9277e0a3922f mod_register_web: Support additional registration fields
Kim Alvefur <zash@zash.se>
parents: 1234
diff changeset
162 end
1232
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
163 module:fire_event("user-registered", {
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
164 username = prepped_username,
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
165 host = module.host,
1320
e670d4cc5027 mod_register_web: Pass request around so IP address can be reported
Kim Alvefur <zash@zash.se>
parents: 1247
diff changeset
166 source = module.name,
3724
1c3c7d73c5a6 mod_register_web: Fix to use real client IP in case of proxy forwarding (thanks Sebastian)
Kim Alvefur <zash@zash.se>
parents: 3679
diff changeset
167 ip = origin.ip or origin.conn:ip(),
1232
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
168 });
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
169 end
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
170 return jid, err;
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
171 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
172
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
173 function generate_success(event, jid)
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
174 return render(success_tpl, { jid = jid });
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
175 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
176
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
177 function generate_register_response(event, jid, err)
1618
c56baec031e8 mod_register_web: Send Content-Type headers
Kim Alvefur <zash@zash.se>
parents: 1572
diff changeset
178 event.response.headers.content_type = "text/html; charset=utf-8";
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
179 if jid then
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
180 return generate_success(event, jid);
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
181 else
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182 return generate_page(event, { register_error = err });
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
183 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
184 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
186 function handle_form(event)
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
187 local request, response = event.request, event.response;
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
188 local form = http.formdecode(request.body);
1234
da39ba4047a7 mod_register_web: Pass request to captcha handler
Kim Alvefur <zash@zash.se>
parents: 1233
diff changeset
189 verify_captcha(request, form, function (ok, err)
1226
0667624637da mod_register_web: Split out recaptcha verification to a separate function
Kim Alvefur <zash@zash.se>
parents: 1225
diff changeset
190 if ok then
2929
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
191 local jid, register_err = register_user(form, request);
3a104a900af1 mod_register_web: Pass username to generate_register_response
Michel Le Bihan <michel@lebihan.pl>
parents: 2925
diff changeset
192 response:send(generate_register_response(event, jid, register_err));
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
193 else
1226
0667624637da mod_register_web: Split out recaptcha verification to a separate function
Kim Alvefur <zash@zash.se>
parents: 1225
diff changeset
194 response:send(generate_page(event, { register_error = err }));
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
195 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
196 end);
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
197 return true; -- Leave connection open until we respond above
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
198 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
199
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
200 module:provides("http", {
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
201 route = {
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
202 GET = generate_page;
1239
cc5cbeeb9fc7 mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents: 1238
diff changeset
203 ["GET /"] = generate_page;
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
204 POST = handle_form;
1239
cc5cbeeb9fc7 mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents: 1238
diff changeset
205 ["POST /"] = handle_form;
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
206 };
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
207 });