prosody
db9def53fe9c
plugins/mod_hashpassauth.lua

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plugins/mod_hashpassauth.lua @ 3164:db9def53fe9c

Check in mod_hashpassauth -- works!
author Jeff Mitchell <jeff@jefferai.org>
date Wed, 26 May 2010 18:16:58 -0400
child 3166:3c46cb94caed
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3164
db9def53fe9c Check in mod_hashpassauth -- works!
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 -- Copyright (C) 2010 Jeff Mitchell
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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 datamanager = require "util.datamanager";
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11 local log = require "util.logger".init("usermanager");
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12 local type = type;
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13 local error = error;
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14 local ipairs = ipairs;
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15 local hashes = require "util.hashes";
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16 local jid_bare = require "util.jid".bare;
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17 local saltedPasswordSHA1 = require "util.sasl.scram".saltedPasswordSHA1;
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18 local config = require "core.configmanager";
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19 local usermanager = require "core.usermanager";
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20 local generate_uuid = require "util.uuid".generate;
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21 local hosts = hosts;
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22
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23 local prosody = _G.prosody;
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24
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25 local is_cyrus = usermanager.is_cyrus;
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26
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27 -- Default; can be set per-user
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28 local iteration_count = 4096;
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29
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30 function new_hashpass_provider(host)
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31 local provider = { name = "hashpass" };
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32 log("debug", "initializing hashpass authentication provider for host '%s'", host);
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33
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34 function provider.test_password(username, password)
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35 log("debug", "test password for user %s at host %s", username, module.host);
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36 if is_cyrus(host) then return nil, "Legacy auth not supported with Cyrus SASL."; end
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37 local credentials = datamanager.load(username, host, "accounts") or {};
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38
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39 if credentials.hashpass == nil or credentials.iteration_count == nil or credentials.salt == nil then
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40 return nil, "Auth failed. Stored credential information is not complete.";
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41 end
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42
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43 local valid, binpass = saltedPasswordSHA1(password, credentials.salt, credentials.iteration_count);
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44 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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45 if valid then
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46 log("debug", "salted password returned valid");
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47 else
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48 log("debug", "salted password returned not valid");
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49 end
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50 log("debug", "hexpass is '%s', stored pass is '%s'", hexpass, credentials.hashpass);
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51 if valid and hexpass == credentials.hashpass then
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52 return true;
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53 else
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54 return nil, "Auth failed. Invalid username, password, or password hash information.";
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55 end
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56 end
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57
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58 function provider.get_password(username)
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59 log("debug", "get_password for username '%s' at host '%s'", username, module.host);
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60 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
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61 return (datamanager.load(username, host, "accounts") or {}).hashpass;
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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 if is_cyrus(host) then return nil, "Passwords unavailable for Cyrus SASL."; end
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66 local account = datamanager.load(username, host, "accounts");
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67 if account then
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68 if account.iteration_count == nil then
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69 account.iteration_count = iteration_count;
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70 end
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71
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72 if account.salt == nil then
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73 account.salt = generate_uuid();
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74 end
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75
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76 local valid, binpass = saltedPasswordSHA1(password, account.salt, account.iteration_count);
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77 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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78 account.hashpass = hexpass;
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79
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80 return datamanager.store(username, host, "accounts", account);
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81 end
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82 return nil, "Account not available.";
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83 end
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84
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85 function provider.user_exists(username)
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86 if is_cyrus(host) then return true; end
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87 local account = datamanager.load(username, host, "accounts");
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88 if not account then
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89 log("debug", "account not found for username '%s' at host '%s'", username, module.host);
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90 return nil, "Auth failed. Invalid username";
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91 end
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92 if account.hashpass == nil or string.len(account.hashpass) == 0 then
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93 log("debug", "account password not set or zero-length for username '%s' at host '%s'", username, module.host);
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94 return nil, "Auth failed. Password invalid.";
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95 end
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96 return true;
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97 end
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98
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99 function provider.create_user(username, password)
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100 if is_cyrus(host) then return nil, "Account creation/modification not available with Cyrus SASL."; end
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101 local salt = generate_uuid();
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102 local valid, binpass = saltedPasswordSHA1(password, salt, iteration_count);
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103 local hexpass = binpass:gsub(".", function (c) return ("%02x"):format(c:byte()); end);
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104 return datamanager.store(username, host, "accounts", {hashpass = hexpass, salt = salt, iteration_count = iteration_count});
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105 end
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106
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107 function provider.get_supported_methods()
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108 return {["PLAIN"] = true}; -- TODO this should be taken from the config
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109 end
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110
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111 function provider.is_admin(jid)
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112 local admins = config.get(host, "core", "admins");
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113 if admins ~= config.get("*", "core", "admins") and type(admins) == "table" then
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114 jid = jid_bare(jid);
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115 for _,admin in ipairs(admins) do
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116 if admin == jid then return true; end
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117 end
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118 elseif admins then
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119 log("error", "Option 'admins' for host '%s' is not a table", host);
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120 end
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121 return is_admin(jid); -- Test whether it's a global admin instead
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122 end
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123 return provider;
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124 end
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125
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126 module:add_item("auth-provider", new_hashpass_provider(module.host));
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127