Mercurial > prosody-modules

annotate mod_register_web/mod_register_web.lua @ 1520:2881d532f385

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mod_smacks: Use filters for queuing outgoing stanzas instead of wrapping session.send()
author Kim Alvefur <zash@zash.se>
date Sun, 12 Oct 2014 13:24:50 +0200
parents 5e1f7af23cf0
children 1aa894db3585
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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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4 local http = require "net.http";
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742f3dc601b5 mod_register_web: Use path separator from package.config
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parents: 1320
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5 local path_sep = package.config:sub(1,1);
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c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
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6
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5e1f7af23cf0 mod_register_web: Add dependency on mod_http
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7 module:depends"http";
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8
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9 local extra_fields = {
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10 nick = true; name = true; first = true; last = true; email = true;
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11 address = true; city = true; state = true; zip = true;
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12 phone = true; url = true; date = true;
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13 }
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parents: 1234
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14
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6015434f0e05 mod_register_web: Move HTML into separate template files
Kim Alvefur <zash@zash.se>
parents: 1226
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15 function template(data)
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16 -- Like util.template, but deals with plain text
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17 return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end }
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18 end
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parents: 1226
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19
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20 local function get_template(name)
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21 local fh = assert(module:load_resource("templates"..path_sep..name..".html"));
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22 local data = assert(fh:read("*a"));
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23 fh:close();
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24 return template(data);
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25 end
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26
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27 local function render(template, data)
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28 return tostring(template.apply(data));
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29 end
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30
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31 local register_tpl = get_template "register";
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32 local success_tpl = get_template "success";
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33
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34 if next(captcha_options) ~= nil then
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35 local recaptcha_tpl = get_template "recaptcha";
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36
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37 function generate_captcha(display_options)
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38 return recaptcha_tpl.apply(setmetatable({
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39 recaptcha_display_error = display_options and display_options.recaptcha_error
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40 and ("&error="..display_options.recaptcha_error) or "";
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41 }, {
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42 __index = function (t, k)
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43 if captcha_options[k] then return captcha_options[k]; end
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parents: 1227
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44 module:log("error", "Missing parameter from captcha_options: %s", k);
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45 end
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parents: 1227
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46 }));
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parents: 1227
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47 end
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da39ba4047a7 mod_register_web: Pass request to captcha handler
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parents: 1233
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48 function verify_captcha(request, form, callback)
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parents: 1227
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49 http.request("https://www.google.com/recaptcha/api/verify", {
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parents: 1227
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50 body = http.formencode {
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parents: 1227
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51 privatekey = captcha_options.recaptcha_private_key;
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parents: 1227
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52 remoteip = request.conn:ip();
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parents: 1227
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53 challenge = form.recaptcha_challenge_field;
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parents: 1227
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54 response = form.recaptcha_response_field;
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55 };
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56 }, function (verify_result, code)
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parents: 1227
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57 local verify_ok, verify_err = verify_result:match("^([^\n]+)\n([^\n]+)");
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parents: 1227
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58 if verify_ok == "true" then
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parents: 1227
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59 callback(true);
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60 else
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61 callback(false, verify_err)
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62 end
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parents: 1227
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63 end);
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parents: 1227
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64 end
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Kim Alvefur <zash@zash.se>
parents: 1227
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65 else
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parents: 1227
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66 module:log("debug", "No Recaptcha options set, using fallback captcha")
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parents: 1230
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67 local random = math.random;
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parents: 1227
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68 local hmac_sha1 = require "util.hashes".hmac_sha1;
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parents: 1227
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69 local secret = require "util.uuid".generate()
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Kim Alvefur <zash@zash.se>
parents: 1227
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70 local ops = { '+', '-' };
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parents: 1227
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71 local captcha_tpl = get_template "simplecaptcha";
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parents: 1227
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72 function generate_captcha()
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parents: 1230
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73 local op = ops[random(1, #ops)];
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parents: 1230
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74 local x, y = random(1, 9)
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75 repeat
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parents: 1230
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76 y = random(1, 9);
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parents: 1227
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77 until x ~= y;
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parents: 1227
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78 local answer;
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parents: 1227
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79 if op == '+' then
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parents: 1227
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80 answer = x + y;
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parents: 1227
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81 elseif op == '-' then
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parents: 1227
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82 if x < y then
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parents: 1227
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83 -- Avoid negative numbers
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84 x, y = y, x;
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85 end
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86 answer = x - y;
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87 end
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88 local challenge = hmac_sha1(secret, answer, true);
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89 return captcha_tpl.apply {
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90 op = op, x = x, y = y, challenge = challenge;
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91 };
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92 end
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93 function verify_captcha(request, form, callback)
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94 if hmac_sha1(secret, form.captcha_reply, true) == form.captcha_challenge then
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95 callback(true);
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96 else
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97 callback(false, "Captcha verification failed");
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98 end
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99 end
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parents: 1225
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100 end
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c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
101
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Matthew Wild <mwild1@gmail.com>
parents:
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102 function generate_page(event, display_options)
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103 local request = event.request;
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104
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105 return render(register_tpl, {
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106 path = request.path; hostname = module.host;
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107 notice = display_options and display_options.register_error or "";
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108 captcha = generate_captcha(display_options);
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109 })
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parents:
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110 end
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parents:
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111
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112 function register_user(form, origin)
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113 local prepped_username = nodeprep(form.username);
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114 if not prepped_username then
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115 return nil, "Username contains forbidden characters";
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116 end
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117 if #prepped_username == 0 then
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118 return nil, "The username field was empty";
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119 end
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120 if usermanager.user_exists(prepped_username, module.host) then
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121 return nil, "Username already taken";
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122 end
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parents: 1237
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123 local registering = { username = prepped_username , host = module.host, allowed = true }
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124 module:fire_event("user-registering", registering);
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parents: 1236
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125 if not registering.allowed then
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126 return nil, "Registration not allowed";
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127 end
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128 local ok, err = usermanager.create_user(prepped_username, form.password, module.host);
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parents: 1231
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129 if ok then
1235
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parents: 1234
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130 local extra_data = {};
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parents: 1234
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131 for field in pairs(extra_fields) do
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132 local field_value = form[field];
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133 if field_value and #field_value > 0 then
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134 extra_data[field] = field_value;
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135 end
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136 end
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137 if next(extra_data) ~= nil then
1235
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138 datamanager.store(prepped_username, module.host, "account_details", extra_data);
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139 end
1232
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140 module:fire_event("user-registered", {
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141 username = prepped_username,
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142 host = module.host,
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143 source = module.name,
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144 ip = origin.conn:ip(),
1232
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parents: 1231
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145 });
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parents: 1231
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146 end
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147 return ok, err;
653
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parents:
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148 end
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parents:
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149
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parents:
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150 function generate_success(event, form)
1227
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parents: 1226
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151 return render(success_tpl, { jid = nodeprep(form.username).."@"..module.host });
653
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parents:
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152 end
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parents:
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153
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parents:
diff changeset
154 function generate_register_response(event, form, ok, err)
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parents:
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155 local message;
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parents:
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156 if ok then
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parents:
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157 return generate_success(event, form);
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parents:
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158 else
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parents:
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159 return generate_page(event, { register_error = err });
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parents:
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160 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
162
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
163 function handle_form(event)
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parents:
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164 local request, response = event.request, event.response;
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parents:
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165 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
166 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
167 if ok then
1320
e670d4cc5027 mod_register_web: Pass request around so IP address can be reported
Kim Alvefur <zash@zash.se>
parents: 1247
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168 local register_ok, register_err = register_user(form, request);
653
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parents:
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169 response:send(generate_register_response(event, form, register_ok, register_err));
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parents:
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170 else
1226
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parents: 1225
diff changeset
171 response:send(generate_page(event, { register_error = err }));
653
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parents:
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172 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
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173 end);
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
diff changeset
174 return true; -- Leave connection open until we respond above
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parents:
diff changeset
175 end
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parents:
diff changeset
176
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parents:
diff changeset
177 module:provides("http", {
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parents:
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178 route = {
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
diff changeset
179 GET = generate_page;
1239
cc5cbeeb9fc7 mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents: 1238
diff changeset
180 ["GET /"] = generate_page;
653
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parents:
diff changeset
181 POST = handle_form;
1239
cc5cbeeb9fc7 mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents: 1238
diff changeset
182 ["POST /"] = handle_form;
653
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
183 };
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
184 });