Mercurial > prosody-modules

annotate mod_register_web/mod_register_web.lua @ 1320:e670d4cc5027

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mod_register_web: Pass request around so IP address can be reported
author Kim Alvefur <zash@zash.se>
date Wed, 26 Feb 2014 20:15:41 +0100
parents 34fbe58d19da
children 742f3dc601b5
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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c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
5
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6 local extra_fields = {
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7 nick = true; name = true; first = true; last = true; email = true;
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parents: 1234
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8 address = true; city = true; state = true; zip = true;
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parents: 1234
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9 phone = true; url = true; date = true;
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parents: 1234
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10 }
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11
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Kim Alvefur <zash@zash.se>
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12 function template(data)
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Kim Alvefur <zash@zash.se>
parents: 1226
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13 -- Like util.template, but deals with plain text
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parents: 1226
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14 return { apply = function(values) return (data:gsub("{([^}]+)}", values)); end }
6015434f0e05 mod_register_web: Move HTML into separate template files
Kim Alvefur <zash@zash.se>
parents: 1226
diff changeset
15 end
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Kim Alvefur <zash@zash.se>
parents: 1226
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16
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Kim Alvefur <zash@zash.se>
parents: 1226
diff changeset
17 local function get_template(name)
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Kim Alvefur <zash@zash.se>
parents: 1226
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18 local fh = assert(module:load_resource("templates/"..name..".html"));
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parents: 1226
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19 local data = assert(fh:read("*a"));
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Kim Alvefur <zash@zash.se>
parents: 1226
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20 fh:close();
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21 return template(data);
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22 end
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Kim Alvefur <zash@zash.se>
parents: 1226
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23
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24 local function render(template, data)
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25 return tostring(template.apply(data));
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26 end
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Kim Alvefur <zash@zash.se>
parents: 1226
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27
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parents: 1226
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28 local register_tpl = get_template "register";
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parents: 1226
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29 local success_tpl = get_template "success";
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db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
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30
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Kim Alvefur <zash@zash.se>
parents: 1227
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31 if next(captcha_options) ~= nil then
db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
diff changeset
32 local recaptcha_tpl = get_template "recaptcha";
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33
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Kim Alvefur <zash@zash.se>
parents: 1227
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34 function generate_captcha(display_options)
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Kim Alvefur <zash@zash.se>
parents: 1227
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35 return recaptcha_tpl.apply(setmetatable({
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36 recaptcha_display_error = display_options and display_options.recaptcha_error
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parents: 1227
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37 and ("&error="..display_options.recaptcha_error) or "";
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38 }, {
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Kim Alvefur <zash@zash.se>
parents: 1227
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39 __index = function (t, k)
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parents: 1227
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40 if captcha_options[k] then return captcha_options[k]; end
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Kim Alvefur <zash@zash.se>
parents: 1227
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41 module:log("error", "Missing parameter from captcha_options: %s", k);
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42 end
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Kim Alvefur <zash@zash.se>
parents: 1227
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43 }));
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parents: 1227
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44 end
1234
da39ba4047a7 mod_register_web: Pass request to captcha handler
Kim Alvefur <zash@zash.se>
parents: 1233
diff changeset
45 function verify_captcha(request, form, callback)
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Kim Alvefur <zash@zash.se>
parents: 1227
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46 http.request("https://www.google.com/recaptcha/api/verify", {
db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
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47 body = http.formencode {
db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
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48 privatekey = captcha_options.recaptcha_private_key;
db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
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49 remoteip = request.conn:ip();
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Kim Alvefur <zash@zash.se>
parents: 1227
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50 challenge = form.recaptcha_challenge_field;
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Kim Alvefur <zash@zash.se>
parents: 1227
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51 response = form.recaptcha_response_field;
db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
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52 };
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Kim Alvefur <zash@zash.se>
parents: 1227
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53 }, function (verify_result, code)
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Kim Alvefur <zash@zash.se>
parents: 1227
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54 local verify_ok, verify_err = verify_result:match("^([^\n]+)\n([^\n]+)");
db85ff22ae97 mod_register_web: Add a simple fallback captcha
Kim Alvefur <zash@zash.se>
parents: 1227
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55 if verify_ok == "true" then
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Kim Alvefur <zash@zash.se>
parents: 1227
diff changeset
56 callback(true);
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parents: 1227
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57 else
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Kim Alvefur <zash@zash.se>
parents: 1227
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58 callback(false, verify_err)
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parents: 1227
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59 end
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Kim Alvefur <zash@zash.se>
parents: 1227
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60 end);
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Kim Alvefur <zash@zash.se>
parents: 1227
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61 end
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Kim Alvefur <zash@zash.se>
parents: 1227
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62 else
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parents: 1227
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63 module:log("debug", "No Recaptcha options set, using fallback captcha")
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502ce9672eae mod_register_web: Use local
Kim Alvefur <zash@zash.se>
parents: 1230
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64 local random = math.random;
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Kim Alvefur <zash@zash.se>
parents: 1227
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65 local hmac_sha1 = require "util.hashes".hmac_sha1;
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parents: 1227
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66 local secret = require "util.uuid".generate()
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Kim Alvefur <zash@zash.se>
parents: 1227
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67 local ops = { '+', '-' };
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parents: 1227
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68 local captcha_tpl = get_template "simplecaptcha";
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Kim Alvefur <zash@zash.se>
parents: 1227
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69 function generate_captcha()
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502ce9672eae mod_register_web: Use local
Kim Alvefur <zash@zash.se>
parents: 1230
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70 local op = ops[random(1, #ops)];
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Kim Alvefur <zash@zash.se>
parents: 1230
diff changeset
71 local x, y = random(1, 9)
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Kim Alvefur <zash@zash.se>
parents: 1227
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72 repeat
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Kim Alvefur <zash@zash.se>
parents: 1230
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73 y = random(1, 9);
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Kim Alvefur <zash@zash.se>
parents: 1227
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74 until x ~= y;
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Kim Alvefur <zash@zash.se>
parents: 1227
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75 local answer;
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Kim Alvefur <zash@zash.se>
parents: 1227
diff changeset
76 if op == '+' then
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parents: 1227
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77 answer = x + y;
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parents: 1227
diff changeset
78 elseif op == '-' then
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Kim Alvefur <zash@zash.se>
parents: 1227
diff changeset
79 if x < y then
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Kim Alvefur <zash@zash.se>
parents: 1227
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80 -- Avoid negative numbers
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parents: 1227
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81 x, y = y, x;
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parents: 1227
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82 end
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83 answer = x - y;
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84 end
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85 local challenge = hmac_sha1(secret, answer, true);
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parents: 1227
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86 return captcha_tpl.apply {
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Kim Alvefur <zash@zash.se>
parents: 1227
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87 op = op, x = x, y = y, challenge = challenge;
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parents: 1225
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88 };
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89 end
1234
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90 function verify_captcha(request, form, callback)
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parents: 1227
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91 if hmac_sha1(secret, form.captcha_reply, true) == form.captcha_challenge then
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parents: 1225
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92 callback(true);
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93 else
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94 callback(false, "Captcha verification failed");
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95 end
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parents: 1227
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96 end
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parents: 1225
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97 end
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c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
98
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
99 function generate_page(event, display_options)
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
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100 local request = event.request;
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101
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Kim Alvefur <zash@zash.se>
parents: 1226
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102 return render(register_tpl, {
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Kim Alvefur <zash@zash.se>
parents: 1226
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103 path = request.path; hostname = module.host;
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Kim Alvefur <zash@zash.se>
parents: 1226
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104 notice = display_options and display_options.register_error or "";
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Kim Alvefur <zash@zash.se>
parents: 1226
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105 captcha = generate_captcha(display_options);
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parents: 1226
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106 })
653
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
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107 end
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
108
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e670d4cc5027 mod_register_web: Pass request around so IP address can be reported
Kim Alvefur <zash@zash.se>
parents: 1247
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109 function register_user(form, origin)
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Kim Alvefur <zash@zash.se>
parents: 1228
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110 local prepped_username = nodeprep(form.username);
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Kim Alvefur <zash@zash.se>
parents: 1229
diff changeset
111 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
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112 return nil, "Username contains forbidden characters";
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parents: 1229
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113 end
1236
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Kim Alvefur <zash@zash.se>
parents: 1235
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114 if #prepped_username == 0 then
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Kim Alvefur <zash@zash.se>
parents: 1235
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115 return nil, "The username field was empty";
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parents: 1235
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116 end
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Kim Alvefur <zash@zash.se>
parents: 1228
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117 if usermanager.user_exists(prepped_username, module.host) then
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parents: 1229
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118 return nil, "Username already taken";
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parents: 1228
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119 end
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parents: 1237
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120 local registering = { username = prepped_username , host = module.host, allowed = true }
1237
c669cb78b293 mod_register_web: Fire user-registering event like mod_register
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parents: 1236
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121 module:fire_event("user-registering", registering);
c669cb78b293 mod_register_web: Fire user-registering event like mod_register
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parents: 1236
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122 if not registering.allowed then
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parents: 1236
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123 return nil, "Registration not allowed";
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parents: 1236
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124 end
1233
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Kim Alvefur <zash@zash.se>
parents: 1232
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125 local ok, err = usermanager.create_user(prepped_username, form.password, module.host);
1232
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Kim Alvefur <zash@zash.se>
parents: 1231
diff changeset
126 if ok then
1235
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Kim Alvefur <zash@zash.se>
parents: 1234
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127 local extra_data = {};
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Kim Alvefur <zash@zash.se>
parents: 1234
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128 for field in pairs(extra_fields) do
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Kim Alvefur <zash@zash.se>
parents: 1234
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129 local field_value = form[field];
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parents: 1234
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130 if field_value and #field_value > 0 then
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parents: 1234
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131 extra_data[field] = field_value;
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parents: 1234
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132 end
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Kim Alvefur <zash@zash.se>
parents: 1234
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133 end
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parents: 1237
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134 if next(extra_data) ~= nil then
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135 datamanager.store(prepped_username, module.host, "account_details", extra_data);
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136 end
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137 module:fire_event("user-registered", {
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138 username = prepped_username,
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139 host = module.host,
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140 source = module.name,
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141 ip = origin.conn:ip(),
1232
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142 });
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143 end
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144 return ok, err;
653
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parents:
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145 end
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parents:
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146
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parents:
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147 function generate_success(event, form)
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parents: 1226
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148 return render(success_tpl, { jid = nodeprep(form.username).."@"..module.host });
653
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parents:
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149 end
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parents:
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150
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parents:
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151 function generate_register_response(event, form, ok, err)
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152 local message;
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153 if ok then
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parents:
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154 return generate_success(event, form);
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parents:
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155 else
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parents:
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156 return generate_page(event, { register_error = err });
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parents:
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157 end
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parents:
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158 end
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parents:
diff changeset
159
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parents:
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160 function handle_form(event)
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parents:
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161 local request, response = event.request, event.response;
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parents:
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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
1320
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Kim Alvefur <zash@zash.se>
parents: 1247
diff changeset
165 local register_ok, register_err = register_user(form, request);
653
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parents:
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166 response:send(generate_register_response(event, form, register_ok, register_err));
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
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167 else
1226
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parents: 1225
diff changeset
168 response:send(generate_page(event, { register_error = err }));
653
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parents:
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169 end
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parents:
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170 end);
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parents:
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171 return true; -- Leave connection open until we respond above
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parents:
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172 end
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parents:
diff changeset
173
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parents:
diff changeset
174 module:provides("http", {
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parents:
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175 route = {
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
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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
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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
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parents:
diff changeset
180 };
c08b0e4b7b38 mod_register_web: Extremely rough web registration page, with captcha
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parents:
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181 });