Mercurial > prosody-modules
annotate mod_register_web/mod_register_web.lua @ 2250:f5cc6328b20f
mod_cloud_notify/README: Reflow text
author | Kim Alvefur <zash@zash.se> |
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date | Tue, 26 Jul 2016 11:49:57 +0200 |
parents | 32604bf33a4c |
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1 local captcha_options = module:get_option("captcha_options", {}); |
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2 local nodeprep = require "util.encodings".stringprep.nodeprep; |
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3 local usermanager = require "core.usermanager"; |
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4 local http = require "net.http"; |
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5 local path_sep = package.config:sub(1,1); |
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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") |
1231 | 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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76 local x, y = random(1, 9) | |
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77 repeat |
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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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129 return nil, "Registration not allowed"; |
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130 end |
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131 local ok, err = usermanager.create_user(prepped_username, form.password, module.host); |
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132 if ok then |
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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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136 if field_value and #field_value > 0 then |
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137 extra_data[field] = field_value; |
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138 end |
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139 end |
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140 if next(extra_data) ~= nil then |
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141 datamanager.store(prepped_username, module.host, "account_details", extra_data); |
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142 end |
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143 module:fire_event("user-registered", { |
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144 username = prepped_username, |
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145 host = module.host, |
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146 source = module.name, |
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147 ip = origin.conn:ip(), |
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148 }); |
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149 end |
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150 return ok, err; |
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151 end |
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152 |
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153 function generate_success(event, form) |
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154 return render(success_tpl, { jid = nodeprep(form.username).."@"..module.host }); |
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155 end |
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156 |
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157 function generate_register_response(event, form, ok, err) |
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158 local message; |
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159 event.response.headers.content_type = "text/html; charset=utf-8"; |
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160 if ok then |
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161 return generate_success(event, form); |
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162 else |
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163 return generate_page(event, { register_error = err }); |
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164 end |
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165 end |
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166 |
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167 function handle_form(event) |
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168 local request, response = event.request, event.response; |
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169 local form = http.formdecode(request.body); |
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170 verify_captcha(request, form, function (ok, err) |
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171 if ok then |
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172 local register_ok, register_err = register_user(form, request); |
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173 response:send(generate_register_response(event, form, register_ok, register_err)); |
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174 else |
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175 response:send(generate_page(event, { register_error = err })); |
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176 end |
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177 end); |
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178 return true; -- Leave connection open until we respond above |
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|
179 end |
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|
180 |
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|
181 module:provides("http", { |
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182 route = { |
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|
183 GET = generate_page; |
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184 ["GET /"] = generate_page; |
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|
185 POST = handle_form; |
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|
186 ["POST /"] = handle_form; |
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|
187 }; |
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188 }); |