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annotate mod_auth_http_async/mod_auth_http_async.lua @ 1421:295c30e44ba8

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mod_auth_http_async: Async HTTP auth module
author Kim Alvefur <zash@zash.se>
date Thu, 29 May 2014 17:46:42 +0200
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children 39a0a35f02bc
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2013 Matthew Wild
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3 -- Copyright (C) 2008-2013 Waqas Hussain
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4 -- Copyright (C) 2014 Kim Alvefur
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local usermanager = require "core.usermanager";
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11 local new_sasl = require "util.sasl".new;
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12 local base64 = require "util.encodings".base64.encode;
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13 local waiter =require "util.async".waiter;
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14 local http = require "net.http";
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15
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16 local log = module._log;
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17 local host = module.host;
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18
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19 local api_base = module:get_option_string("http_auth_url", ""):gsub("$host", host);
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20 if api_base == "" then error("http_auth_url required") end
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21
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22 local provider = {};
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24 function provider.test_password(username, password)
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25 log("debug", "test password for user %s at host %s", username, host);
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26
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27 local wait, done = waiter();
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28
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29 local code = -1;
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30 http.request(api_base:gsub("$user", username), {
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31 headers = {
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32 Authorization = "Basic "..base64(username..":"..password);
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33 };
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34 },
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35 function(body, _code)
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36 code = _code;
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37 done();
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38 end);
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39
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40 wait();
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41
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42 if code >= 200 and code <= 299 then
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43 return true;
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44 else
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45 module:log("debug", "HTTP auth provider returned status code %d", code);
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46 return nil, "Auth failed. Invalid username or password.";
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47 end
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48 end
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49
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50 function provider.set_password(username, password)
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51 return nil, "Changing passwords not supported";
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52 end
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53
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54 function provider.user_exists(username)
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55 return true;
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56 end
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57
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58 function provider.create_user(username, password)
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59 return nil, "User creation not supported";
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60 end
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61
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62 function provider.delete_user(username)
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63 return nil , "User deletion not supported";
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64 end
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65
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66 function provider.get_sasl_handler()
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67 return new_sasl(host, {
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68 plain_test = function(sasl, username, password, realm)
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69 return usermanager.test_password(username, realm, password), true;
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70 end
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71 });
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72 end
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73
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74 module:provides("auth", provider);
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75