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annotate mod_auth_http_async/mod_auth_http_async.lua @ 2159:5e8dec076afc

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mod_auth_http_async: Fall back to non-async calling of http_auth_url if util.async is not available
author JC Brand <jcbrand@minddistrict.com>
date Fri, 15 Apr 2016 13:45:01 +0000
parents 54f9e8663139
children b2a198665946
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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 new_sasl = require "util.sasl".new;
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11 local base64 = require "util.encodings".base64.encode;
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12 local have_async, async = pcall(require, "util.async");
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13 local http = require "net.http";
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14
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15 local log = module._log;
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16 local host = module.host;
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17
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18 local api_base = module:get_option_string("http_auth_url", ""):gsub("$host", host);
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19 if api_base == "" then error("http_auth_url required") end
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20
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21 local function async_http_request(url, ex)
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22 local wait, done = async.waiter();
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23 local content, code, request, response;
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24 local function cb(content_, code_, request_, response_)
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25 content, code, request, response = content_, code_, request_, response_;
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26 done();
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27 end
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28 http.request(url, ex, cb);
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29 wait();
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30 return content, code, request, response;
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31 end
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32
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33 local provider = {};
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34
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35 function provider.test_password(username, password)
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36 log("debug", "test password for user %s at host %s", username, host);
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37 local url = api_base:gsub("$user", username);
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38 local ex = {
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39 headers = { Authorization = "Basic "..base64(username..":"..password); };
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40 }
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41 if (have_async) then
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42 local _, code = async_http_request(url, ex);
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43 if code >= 200 and code <= 299 then
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44 module:log("debug", "HTTP auth provider confirmed valid password");
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45 return true;
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46 else
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47 module:log("debug", "HTTP auth provider returned status code %d", code);
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48 end
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49 else
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50 local ok, err = http.request(url, ex, function(body, code)
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51 if code >= 200 and code <= 299 then
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52 module:log("debug", "HTTP auth provider confirmed valid password");
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53 else
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54 module:log("debug", "HTTP auth provider returned status code %d", code);
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55 end
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56 end);
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57 if ok then
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58 return true;
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59 end
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60 end
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61 return nil, "Auth failed. Invalid username or password.";
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62 end
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63
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64 function provider.set_password(username, password)
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65 return nil, "Changing passwords not supported";
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66 end
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67
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68 function provider.user_exists(username)
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69 return true;
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70 end
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71
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72 function provider.create_user(username, password)
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73 return nil, "User creation not supported";
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74 end
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75
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76 function provider.delete_user(username)
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77 return nil , "User deletion not supported";
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78 end
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79
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80 function provider.get_sasl_handler()
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81 return new_sasl(host, {
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82 plain_test = function(sasl, username, password, realm)
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83 return provider.test_password(username, password), true;
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84 end
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85 });
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86 end
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87
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88 module:provides("auth", provider);