Mercurial > prosody-modules
annotate mod_auth_joomla/mod_auth_joomla.lua @ 423:524dda2ecb6a
mod_auth_wordpress: Initial commit.
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 11 Sep 2011 21:42:16 +0200 |
parents | 1082856e4612 |
children | 5e71e24e33fc |
rev | line source |
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422
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1 -- Joomla authentication backend for Prosody |
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2 -- |
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3 -- Copyright (C) 2011 Waqas Hussain |
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4 -- |
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5 |
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6 local new_sasl = require "util.sasl".new; |
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7 local nodeprep = require "util.encodings".stringprep.nodeprep; |
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8 local saslprep = require "util.encodings".stringprep.saslprep; |
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9 local DBI = require "DBI" |
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10 local md5 = require "util.hashes".md5; |
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11 local uuid_gen = require "util.uuid".generate; |
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12 |
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13 local connection; |
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14 local params = module:get_option("sql"); |
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15 |
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16 local resolve_relative_path = require "core.configmanager".resolve_relative_path; |
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17 |
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18 local function test_connection() |
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19 if not connection then return nil; end |
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20 if connection:ping() then |
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21 return true; |
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22 else |
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23 module:log("debug", "Database connection closed"); |
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24 connection = nil; |
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25 end |
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26 end |
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27 local function connect() |
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28 if not test_connection() then |
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29 prosody.unlock_globals(); |
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30 local dbh, err = DBI.Connect( |
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31 params.driver, params.database, |
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32 params.username, params.password, |
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33 params.host, params.port |
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34 ); |
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35 prosody.lock_globals(); |
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36 if not dbh then |
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37 module:log("debug", "Database connection failed: %s", tostring(err)); |
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38 return nil, err; |
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39 end |
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40 module:log("debug", "Successfully connected to database"); |
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41 dbh:autocommit(true); -- don't run in transaction |
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42 connection = dbh; |
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43 return connection; |
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44 end |
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45 end |
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46 |
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47 do -- process options to get a db connection |
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48 params = params or { driver = "SQLite3" }; |
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49 |
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50 if params.driver == "SQLite3" then |
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51 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite"); |
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52 end |
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53 |
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54 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified"); |
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55 |
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56 assert(connect()); |
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57 end |
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58 |
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59 local function getsql(sql, ...) |
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60 if params.driver == "PostgreSQL" then |
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61 sql = sql:gsub("`", "\""); |
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62 end |
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63 if not test_connection() then connect(); end |
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64 -- do prepared statement stuff |
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65 local stmt, err = connection:prepare(sql); |
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66 if not stmt and not test_connection() then error("connection failed"); end |
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67 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end |
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68 -- run query |
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69 local ok, err = stmt:execute(...); |
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70 if not ok and not test_connection() then error("connection failed"); end |
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71 if not ok then return nil, err; end |
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72 |
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73 return stmt; |
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74 end |
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75 local function setsql(sql, ...) |
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76 local stmt, err = getsql(sql, ...); |
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77 if not stmt then return stmt, err; end |
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78 return stmt:affected(); |
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79 end |
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80 |
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81 local function get_password(username) |
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82 local stmt, err = getsql("SELECT `password` FROM `jos_users` WHERE `username`=?", username); |
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83 if stmt then |
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84 for row in stmt:rows(true) do |
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85 return row.password; |
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86 end |
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87 end |
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88 end |
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89 |
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90 |
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91 local function getCryptedPassword(plaintext, salt) |
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92 return md5(plaintext..salt); |
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93 end |
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94 local function joomlaCheckHash(password, hash) |
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95 local crypt, salt = hash:match("^([^:]*):(.*)$"); |
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96 return (crypt or hash) == getCryptedPassword(password, salt or ''); |
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97 end |
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98 local function joomlaCreateHash(password) |
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99 local salt = uuid_gen():gsub("%-", ""); |
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100 local crypt = getCryptedPassword(password, salt); |
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101 return crypt..':'..salt; |
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102 end |
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103 |
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104 |
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105 provider = { name = "joomla" }; |
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106 |
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107 function provider.test_password(username, password) |
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108 local hash = get_password(username); |
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109 return hash and joomlaCheckHash(password, hash); |
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110 end |
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111 function provider.user_exists(username) |
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112 module:log("debug", "test user %s existence", username); |
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113 return get_password(username) and true; |
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114 end |
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115 |
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116 function provider.get_password(username) |
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117 return nil, "Getting password is not supported."; |
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118 end |
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119 function provider.set_password(username, password) |
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120 local hash = joomlaCreateHash(password); |
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121 local stmt, err = setsql("UPDATE `jos_users` SET `password`=? WHERE `username`=?", hash, username); |
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122 return stmt and true, err; |
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123 end |
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124 function provider.create_user(username, password) |
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125 return nil, "Account creation/modification not supported."; |
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126 end |
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127 |
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128 local escapes = { |
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129 [" "] = "\\20"; |
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130 ['"'] = "\\22"; |
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131 ["&"] = "\\26"; |
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132 ["'"] = "\\27"; |
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133 ["/"] = "\\2f"; |
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134 [":"] = "\\3a"; |
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135 ["<"] = "\\3c"; |
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136 [">"] = "\\3e"; |
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137 ["@"] = "\\40"; |
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138 ["\\"] = "\\5c"; |
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139 }; |
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140 local unescapes = {}; |
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141 for k,v in pairs(escapes) do unescapes[v] = k; end |
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142 local function jid_escape(s) return s and (s:gsub(".", escapes)); end |
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143 local function jid_unescape(s) return s and (s:gsub("\\%x%x", unescapes)); end |
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144 |
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145 function provider.get_sasl_handler() |
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146 local sasl = {}; |
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147 function sasl:clean_clone() return provider.get_sasl_handler(); end |
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148 function sasl:mechanisms() return { PLAIN = true; }; end |
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149 function sasl:select(mechanism) |
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150 if not self.selected and mechanism == "PLAIN" then |
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151 self.selected = mechanism; |
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152 return true; |
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153 end |
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154 end |
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155 function sasl:process(message) |
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156 if not message then return "failure", "malformed-request"; end |
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157 local authorization, authentication, password = message:match("^([^%z]*)%z([^%z]+)%z([^%z]+)"); |
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158 if not authorization then return "failure", "malformed-request"; end |
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159 authentication = saslprep(authentication); |
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160 password = saslprep(password); |
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161 if (not password) or (password == "") or (not authentication) or (authentication == "") then |
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162 return "failure", "malformed-request", "Invalid username or password."; |
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163 end |
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164 local function test(authentication) |
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165 local prepped = nodeprep(authentication); |
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166 local normalized = jid_unescape(prepped); |
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167 return normalized and provider.test_password(normalized, password) and prepped; |
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168 end |
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169 local username = test(authentication) or test(jid_escape(authentication)); |
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170 if username then |
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171 self.username = username; |
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172 return "success"; |
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173 end |
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174 return "failure", "not-authorized", "Unable to authorize you with the authentication credentials you've sent."; |
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175 end |
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176 return sasl; |
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177 end |
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178 |
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179 module:add_item("auth-provider", provider); |
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180 |