Mercurial > prosody-modules

annotate mod_register_web/mod_register_web.lua @ 2388:b6d59998dba7

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mod_firewall: README: Document dynamic '$local' zone
author Matthew Wild <mwild1@gmail.com>
date Sat, 19 Nov 2016 16:00:03 +0000
parents 32604bf33a4c
children c8161146c698
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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>
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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)
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2 local nodeprep = require "util.encodings".stringprep.nodeprep;
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a3766d3baacb mod_register_web: Import usermanager and util.http into locals
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3 local usermanager = require "core.usermanager";
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34fbe58d19da mod_register_web: Use net.http instead of util.http, as we need to make requests (thanks dustin)
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4 local http = require "net.http";
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742f3dc601b5 mod_register_web: Use path separator from package.config
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5 local path_sep = package.config:sub(1,1);
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Thijs Alkemade <me@thijsalkema.de>
parents: 1618
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6 local json = require "util.json".decode;
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7 local t_concat = table.concat;
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8
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9 module:depends"http";
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10
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11 local extra_fields = {
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12 nick = true; name = true; first = true; last = true; email = true;
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13 address = true; city = true; state = true; zip = true;
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14 phone = true; url = true; date = true;
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15 }
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16
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17 local template_path = module:get_option_string("register_web_template", "templates");
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18 function template(data)
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19 -- Like util.template, but deals with plain text
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20 return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end }
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21 end
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22
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23 local function get_template(name)
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24 local fh = assert(module:load_resource(template_path..path_sep..name..".html"));
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25 local data = assert(fh:read("*a"));
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26 fh:close();
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27 return template(data);
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28 end
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29
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30 local function render(template, data)
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31 return tostring(template.apply(data));
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32 end
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33
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34 local register_tpl = get_template "register";
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35 local success_tpl = get_template "success";
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36
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37 if next(captcha_options) ~= nil then
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38 local recaptcha_tpl = get_template "recaptcha";
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39
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40 function generate_captcha(display_options)
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41 return recaptcha_tpl.apply(setmetatable({
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42 recaptcha_display_error = display_options and display_options.recaptcha_error
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43 and ("&error="..display_options.recaptcha_error) or "";
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44 }, {
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45 __index = function (t, k)
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46 if captcha_options[k] then return captcha_options[k]; end
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47 module:log("error", "Missing parameter from captcha_options: %s", k);
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48 end
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49 }));
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50 end
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51 function verify_captcha(request, form, callback)
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52 http.request("https://www.google.com/recaptcha/api/siteverify", {
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53 body = http.formencode {
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54 secret = captcha_options.recaptcha_private_key;
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55 remoteip = request.conn:ip();
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56 response = form["g-recaptcha-response"];
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57 };
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58 }, function (verify_result, code)
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59 local result = json(verify_result);
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60 if result.success == true then
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61 callback(true);
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62 else
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63 callback(false, t_concat(result["error-codes"]));
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64 end
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65 end);
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66 end
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67 else
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68 module:log("debug", "No Recaptcha options set, using fallback captcha")
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69 local random = math.random;
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70 local hmac_sha1 = require "util.hashes".hmac_sha1;
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71 local secret = require "util.uuid".generate()
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72 local ops = { '+', '-' };
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73 local captcha_tpl = get_template "simplecaptcha";
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74 function generate_captcha()
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75 local op = ops[random(1, #ops)];
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76 local x, y = random(1, 9)
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77 repeat
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78 y = random(1, 9);
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79 until x ~= y;
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80 local answer;
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81 if op == '+' then
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82 answer = x + y;
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83 elseif op == '-' then
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84 if x < y then
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85 -- Avoid negative numbers
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86 x, y = y, x;
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87 end
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88 answer = x - y;
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89 end
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90 local challenge = hmac_sha1(secret, answer, true);
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91 return captcha_tpl.apply {
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92 op = op, x = x, y = y, challenge = challenge;
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93 };
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94 end
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95 function verify_captcha(request, form, callback)
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96 if hmac_sha1(secret, form.captcha_reply, true) == form.captcha_challenge then
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97 callback(true);
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98 else
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99 callback(false, "Captcha verification failed");
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100 end
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101 end
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102 end
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103
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104 function generate_page(event, display_options)
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105 local request, response = event.request, event.response;
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106
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107 response.headers.content_type = "text/html; charset=utf-8";
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108 return render(register_tpl, {
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109 path = request.path; hostname = module.host;
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110 notice = display_options and display_options.register_error or "";
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111 captcha = generate_captcha(display_options);
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112 })
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113 end
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114
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115 function register_user(form, origin)
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116 local prepped_username = nodeprep(form.username);
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117 if not prepped_username then
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118 return nil, "Username contains forbidden characters";
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119 end
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120 if #prepped_username == 0 then
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121 return nil, "The username field was empty";
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122 end
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123 if usermanager.user_exists(prepped_username, module.host) then
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124 return nil, "Username already taken";
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125 end
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126 local registering = { username = prepped_username , host = module.host, allowed = true }
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127 module:fire_event("user-registering", registering);
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128 if not registering.allowed then
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parents: 1236
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129 return nil, "Registration not allowed";
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parents: 1236
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130 end
1233
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131 local ok, err = usermanager.create_user(prepped_username, form.password, module.host);
1232
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132 if ok then
1235
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133 local extra_data = {};
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134 for field in pairs(extra_fields) do
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135 local field_value = form[field];
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parents: 1234
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136 if field_value and #field_value > 0 then
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parents: 1234
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137 extra_data[field] = field_value;
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parents: 1234
diff changeset
138 end
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Kim Alvefur <zash@zash.se>
parents: 1234
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139 end
1238
752285859607 mod_register_web: Use correct variables
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parents: 1237
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140 if next(extra_data) ~= nil then
1235
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parents: 1234
diff changeset
141 datamanager.store(prepped_username, module.host, "account_details", extra_data);
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parents: 1234
diff changeset
142 end
1232
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Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
143 module:fire_event("user-registered", {
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parents: 1231
diff changeset
144 username = prepped_username,
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Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
145 host = module.host,
1320
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Kim Alvefur <zash@zash.se>
parents: 1247
diff changeset
146 source = module.name,
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Kim Alvefur <zash@zash.se>
parents: 1247
diff changeset
147 ip = origin.conn:ip(),
1232
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
148 });
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
149 end
12f59489ef6e mod_register_web: Fire user-registered event
Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
150 return ok, err;
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
151 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
152
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
153 function generate_success(event, form)
1227
6015434f0e05 mod_register_web: Move HTML into separate template files
Kim Alvefur <zash@zash.se>
parents: 1226
diff changeset
154 return render(success_tpl, { jid = nodeprep(form.username).."@"..module.host });
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
155 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
156
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
157 function generate_register_response(event, form, ok, err)
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
158 local message;
1618
c56baec031e8 mod_register_web: Send Content-Type headers
Kim Alvefur <zash@zash.se>
parents: 1572
diff changeset
159 event.response.headers.content_type = "text/html; charset=utf-8";
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
160 if ok then
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161 return generate_success(event, form);
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
162 else
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
163 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
164 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
165 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
166
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
167 function handle_form(event)
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
168 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
169 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
170 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
171 if ok then
1320
e670d4cc5027 mod_register_web: Pass request around so IP address can be reported
Kim Alvefur <zash@zash.se>
parents: 1247
diff changeset
172 local register_ok, register_err = register_user(form, request);
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
173 response:send(generate_register_response(event, form, register_ok, register_err));
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
174 else
1226
0667624637da mod_register_web: Split out recaptcha verification to a separate function
Kim Alvefur <zash@zash.se>
parents: 1225
diff changeset
175 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
176 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
177 end);
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
178 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
179 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
180
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
181 module:provides("http", {
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182 route = {
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
183 GET = generate_page;
1239
cc5cbeeb9fc7 mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents: 1238
diff changeset
184 ["GET /"] = generate_page;
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185 POST = handle_form;
1239
cc5cbeeb9fc7 mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents: 1238
diff changeset
186 ["POST /"] = handle_form;
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
187 };
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
188 });