Mercurial > prosody-modules
annotate mod_auth_sql/mod_auth_sql.lua @ 1595:6288591d5edf
mod_storage_gdbm: Prepare for supporting multiple store types
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 25 Jan 2015 22:17:20 +0100 |
parents | 7dbde05b48a9 |
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rev | line source |
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1 -- Simple SQL Authentication module for Prosody IM |
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2 -- Copyright (C) 2011 Tomasz Sterna <tomek@xiaoka.com> |
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3 -- Copyright (C) 2011 Waqas Hussain <waqas20@gmail.com> |
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4 -- |
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5 |
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6 local log = require "util.logger".init("auth_sql"); |
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7 local new_sasl = require "util.sasl".new; |
398 | 8 local DBI = require "DBI" |
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9 |
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10 local connection; |
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11 local params = module:get_option("auth_sql", module:get_option("sql")); |
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12 |
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13 local resolve_relative_path = require "core.configmanager".resolve_relative_path; |
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14 |
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15 local function test_connection() |
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16 if not connection then return nil; end |
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17 if connection:ping() then |
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18 return true; |
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19 else |
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20 module:log("debug", "Database connection closed"); |
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21 connection = nil; |
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22 end |
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23 end |
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24 local function connect() |
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25 if not test_connection() then |
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26 prosody.unlock_globals(); |
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27 local dbh, err = DBI.Connect( |
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28 params.driver, params.database, |
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29 params.username, params.password, |
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30 params.host, params.port |
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31 ); |
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32 prosody.lock_globals(); |
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33 if not dbh then |
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34 module:log("debug", "Database connection failed: %s", tostring(err)); |
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35 return nil, err; |
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36 end |
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37 module:log("debug", "Successfully connected to database"); |
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38 dbh:autocommit(true); -- don't run in transaction |
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39 connection = dbh; |
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40 return connection; |
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41 end |
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42 end |
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43 |
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44 do -- process options to get a db connection |
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45 params = params or { driver = "SQLite3" }; |
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46 |
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47 if params.driver == "SQLite3" then |
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48 params.database = resolve_relative_path(prosody.paths.data or ".", params.database or "prosody.sqlite"); |
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49 end |
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50 |
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51 assert(params.driver and params.database, "Both the SQL driver and the database need to be specified"); |
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52 |
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53 assert(connect()); |
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54 end |
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55 |
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56 local function getsql(sql, ...) |
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57 if params.driver == "PostgreSQL" then |
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58 sql = sql:gsub("`", "\""); |
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59 end |
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60 if not test_connection() then connect(); end |
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61 -- do prepared statement stuff |
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62 local stmt, err = connection:prepare(sql); |
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63 if not stmt and not test_connection() then error("connection failed"); end |
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64 if not stmt then module:log("error", "QUERY FAILED: %s %s", err, debug.traceback()); return nil, err; end |
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65 -- run query |
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66 local ok, err = stmt:execute(...); |
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67 if not ok and not test_connection() then error("connection failed"); end |
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68 if not ok then return nil, err; end |
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69 |
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70 return stmt; |
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71 end |
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72 |
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73 local function get_password(username) |
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74 local stmt, err = getsql("SELECT `password` FROM `authreg` WHERE `username`=? AND `realm`=?", username, module.host); |
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75 if stmt then |
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76 for row in stmt:rows(true) do |
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77 return row.password; |
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78 end |
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79 end |
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80 end |
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81 |
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82 |
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83 provider = {}; |
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84 |
398 | 85 function provider.test_password(username, password) |
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86 return password and get_password(username) == password; |
398 | 87 end |
88 function provider.get_password(username) | |
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89 return get_password(username); |
398 | 90 end |
91 function provider.set_password(username, password) | |
92 return nil, "Setting password is not supported."; | |
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93 end |
398 | 94 function provider.user_exists(username) |
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95 return get_password(username) and true; |
398 | 96 end |
97 function provider.create_user(username, password) | |
98 return nil, "Account creation/modification not supported."; | |
99 end | |
100 function provider.get_sasl_handler() | |
101 local profile = { | |
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102 plain = function(sasl, username, realm) |
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103 local password = get_password(username); |
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104 if not password then return "", nil; end |
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105 return password, true; |
398 | 106 end |
107 }; | |
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108 return new_sasl(module.host, profile); |
398 | 109 end |
110 | |
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111 function provider.users() |
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112 local stmt, err = getsql("SELECT `username` FROM `authreg` WHERE `realm`=?", module.host); |
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113 if stmt then |
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114 local next, state = stmt:rows(true) |
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115 return function() |
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116 for row in next, state do |
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117 return row.username; |
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118 end |
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119 end |
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120 end |
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121 return stmt, err; |
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122 end |
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123 |
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124 |
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125 module:provides("auth", provider); |