author | Kim Alvefur <zash@zash.se> |
Wed, 19 Mar 2014 14:04:09 +0100 | |
changeset 1358 | 497e1df4b7ee |
parent 1321 | e670d4cc5027 |
child 1459 | 742f3dc601b5 |
permissions | -rw-r--r-- |
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mod_register_web: Extremely rough web registration page, with captcha
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local captcha_options = module:get_option("captcha_options", {}); |
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mod_register_web: nodeprep username before creating user (thanks IRON)
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local nodeprep = require "util.encodings".stringprep.nodeprep; |
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local usermanager = require "core.usermanager"; |
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local http = require "net.http"; |
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|
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local extra_fields = { |
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nick = true; name = true; first = true; last = true; email = true; |
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address = true; city = true; state = true; zip = true; |
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phone = true; url = true; date = true; |
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} |
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|
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function template(data) |
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-- Like util.template, but deals with plain text |
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return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end } |
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end |
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|
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local function get_template(name) |
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local fh = assert(module:load_resource("templates/"..name..".html")); |
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local data = assert(fh:read("*a")); |
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fh:close(); |
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return template(data); |
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end |
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|
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local function render(template, data) |
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return tostring(template.apply(data)); |
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end |
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|
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local register_tpl = get_template "register"; |
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local success_tpl = get_template "success"; |
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|
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if next(captcha_options) ~= nil then |
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local recaptcha_tpl = get_template "recaptcha"; |
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function generate_captcha(display_options) |
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return recaptcha_tpl.apply(setmetatable({ |
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recaptcha_display_error = display_options and display_options.recaptcha_error |
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and ("&error="..display_options.recaptcha_error) or ""; |
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}, { |
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__index = function (t, k) |
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if captcha_options[k] then return captcha_options[k]; end |
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module:log("error", "Missing parameter from captcha_options: %s", k); |
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end |
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})); |
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end |
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function verify_captcha(request, form, callback) |
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http.request("https://www.google.com/recaptcha/api/verify", { |
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body = http.formencode { |
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privatekey = captcha_options.recaptcha_private_key; |
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remoteip = request.conn:ip(); |
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challenge = form.recaptcha_challenge_field; |
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response = form.recaptcha_response_field; |
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}; |
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}, function (verify_result, code) |
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local verify_ok, verify_err = verify_result:match("^([^\n]+)\n([^\n]+)"); |
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if verify_ok == "true" then |
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callback(true); |
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else |
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callback(false, verify_err) |
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end |
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end); |
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end |
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else |
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module:log("debug", "No Recaptcha options set, using fallback captcha") |
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local random = math.random; |
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local hmac_sha1 = require "util.hashes".hmac_sha1; |
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local secret = require "util.uuid".generate() |
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local ops = { '+', '-' }; |
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local captcha_tpl = get_template "simplecaptcha"; |
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function generate_captcha() |
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local op = ops[random(1, #ops)]; |
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local x, y = random(1, 9) |
|
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repeat |
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y = random(1, 9); |
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until x ~= y; |
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local answer; |
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if op == '+' then |
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answer = x + y; |
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elseif op == '-' then |
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if x < y then |
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-- Avoid negative numbers |
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x, y = y, x; |
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end |
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answer = x - y; |
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end |
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local challenge = hmac_sha1(secret, answer, true); |
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return captcha_tpl.apply { |
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op = op, x = x, y = y, challenge = challenge; |
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}; |
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end |
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function verify_captcha(request, form, callback) |
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if hmac_sha1(secret, form.captcha_reply, true) == form.captcha_challenge then |
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callback(true); |
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else |
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callback(false, "Captcha verification failed"); |
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end |
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end |
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end |
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|
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function generate_page(event, display_options) |
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local request = event.request; |
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101 |
|
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return render(register_tpl, { |
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path = request.path; hostname = module.host; |
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notice = display_options and display_options.register_error or ""; |
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captcha = generate_captcha(display_options); |
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}) |
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end |
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|
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109 |
function register_user(form, origin) |
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local prepped_username = nodeprep(form.username); |
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111 |
if not prepped_username then |
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112 |
return nil, "Username contains forbidden characters"; |
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113 |
end |
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114 |
if #prepped_username == 0 then |
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115 |
return nil, "The username field was empty"; |
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|
116 |
end |
1229
12e3bc0fd6ed
mod_register_web: Indentation fix
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|
117 |
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
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|
118 |
return nil, "Username already taken"; |
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mod_register_web: Indentation fix
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changeset
|
119 |
end |
1238
752285859607
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|
120 |
local registering = { username = prepped_username , host = module.host, allowed = true } |
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|
121 |
module:fire_event("user-registering", registering); |
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|
122 |
if not registering.allowed then |
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|
123 |
return nil, "Registration not allowed"; |
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|
124 |
end |
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125 |
local ok, err = usermanager.create_user(prepped_username, form.password, module.host); |
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|
126 |
if ok then |
1235
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|
127 |
local extra_data = {}; |
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|
128 |
for field in pairs(extra_fields) do |
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|
129 |
local field_value = form[field]; |
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|
130 |
if field_value and #field_value > 0 then |
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|
131 |
extra_data[field] = field_value; |
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|
132 |
end |
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diff
changeset
|
133 |
end |
1238
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diff
changeset
|
134 |
if next(extra_data) ~= nil then |
1235
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parents:
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diff
changeset
|
135 |
datamanager.store(prepped_username, module.host, "account_details", extra_data); |
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diff
changeset
|
136 |
end |
1232
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mod_register_web: Fire user-registered event
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|
137 |
module:fire_event("user-registered", { |
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changeset
|
138 |
username = prepped_username, |
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|
139 |
host = module.host, |
1321
e670d4cc5027
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1247
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changeset
|
140 |
source = module.name, |
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changeset
|
141 |
ip = origin.conn:ip(), |
1232
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changeset
|
142 |
}); |
12f59489ef6e
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parents:
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diff
changeset
|
143 |
end |
12f59489ef6e
mod_register_web: Fire user-registered event
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parents:
1231
diff
changeset
|
144 |
return ok, err; |
653
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
145 |
end |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
146 |
|
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
147 |
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
|
148 |
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
|
149 |
end |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
150 |
|
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
151 |
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
|
152 |
local message; |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
153 |
if ok then |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
154 |
return generate_success(event, form); |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
155 |
else |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
156 |
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
|
157 |
end |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
158 |
end |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
159 |
|
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
160 |
function handle_form(event) |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
161 |
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
|
162 |
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
|
163 |
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
|
164 |
if ok then |
1321
e670d4cc5027
mod_register_web: Pass request around so IP address can be reported
Kim Alvefur <zash@zash.se>
parents:
1247
diff
changeset
|
165 |
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
|
166 |
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
|
167 |
else |
1226
0667624637da
mod_register_web: Split out recaptcha verification to a separate function
Kim Alvefur <zash@zash.se>
parents:
1225
diff
changeset
|
168 |
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
|
169 |
end |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
170 |
end); |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
171 |
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
|
172 |
end |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
173 |
|
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
174 |
module:provides("http", { |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
175 |
route = { |
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
176 |
GET = generate_page; |
1239
cc5cbeeb9fc7
mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents:
1238
diff
changeset
|
177 |
["GET /"] = generate_page; |
653
c08b0e4b7b38
mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff
changeset
|
178 |
POST = handle_form; |
1239
cc5cbeeb9fc7
mod_register_web: Handle URLs with a trailing slash
Kim Alvefur <zash@zash.se>
parents:
1238
diff
changeset
|
179 |
["POST /"] = handle_form; |
653
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 |
}); |