prosody-modules
cd8492748985
mod_auth_external/mod_auth_external.lua

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mod_auth_external/mod_auth_external.lua @ 168:cd8492748985

mod_auth_external: Renamed from mod_extauth. Update logging and options (external_auth_protocol, external_auth_command)
author Matthew Wild <mwild1@gmail.com>
date Thu, 10 Jun 2010 13:01:36 +0100
parent 166:mod_extauth/mod_extauth.lua@75a85eac3c27
child 197:2686221255cf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 --
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2 -- NOTE: currently this uses lpc; when waqas fixes process, it can go back to that
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3 --
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4 -- Prosody IM
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5 -- Copyright (C) 2010 Waqas Hussain
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6 -- Copyright (C) 2010 Jeff Mitchell
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7 --
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8 -- This project is MIT/X11 licensed. Please see the
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9 -- COPYING file in the source package for more information.
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10 --
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13 local nodeprep = require "util.encodings".stringprep.nodeprep;
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14 --local process = require "process";
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15 local lpc = require "lpc";
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16
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17 local config = require "core.configmanager";
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18 local log = module._log;
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19 local host = module.host;
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20 local script_type = config.get(host, "core", "external_auth_protocol") or "generic";
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21 assert(script_type == "ejabberd" or script_type == "generic");
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22 local command = config.get(host, "core", "external_auth_command") or "";
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23 assert(type(command) == "string");
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24 assert(not host:find(":"));
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25 local usermanager = require "core.usermanager";
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26 local jid_bare = require "util.jid".bare;
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27 local new_sasl = require "util.sasl".new;
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28
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29 --local proc;
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30 local pid;
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31 local readfile;
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32 local writefile;
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33 local function send_query(text)
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34 -- if not proc then
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35 if not pid then
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36 log("debug", "Opening process");
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37 -- proc = process.popen(command);
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38 pid, writefile, readfile = lpc.run(command);
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39 end
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40 -- if not proc then
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41 if not pid then
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42 log("debug", "Process failed to open");
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43 return nil;
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44 end
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45 -- proc:write(text);
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46 -- proc:flush();
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47 writefile:write(text);
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48 writefile:flush();
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49 if script_type == "ejabberd" then
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50 -- return proc:read(4); -- FIXME do properly
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51 return readfile:read(4); -- FIXME do properly
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52 elseif script_type == "generic" then
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53 -- return proc:read(1);
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54 return readfile:read();
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55 end
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56 end
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57
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58 function do_query(kind, username, password)
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59 if not username then return nil, "not-acceptable"; end
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60 username = nodeprep(username);
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61 if not username then return nil, "jid-malformed"; end
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62
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63 local query = (password and "%s:%s:%s:%s" or "%s:%s:%s"):format(kind, username, host, password);
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64 local len = #query
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65 if len > 1000 then return nil, "policy-violation"; end
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66
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67 if script_type == "ejabberd" then
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68 local lo = len % 256;
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69 local hi = (len - lo) / 256;
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70 query = string.char(hi, lo)..query;
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71 end
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72 if script_type == "generic" then
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73 query = query..'\n';
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74 end
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75
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76 local response = send_query(query);
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77 if (script_type == "ejabberd" and response == "\0\2\0\0") or
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78 (script_type == "generic" and response == "0") then
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79 return nil, "not-authorized";
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80 elseif (script_type == "ejabberd" and response == "\0\2\0\1") or
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81 (script_type == "generic" and response == "1") then
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82 return true;
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83 else
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84 log("debug", "Nonsense back");
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85 --proc:close();
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86 --proc = nil;
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87 return nil, "internal-server-error";
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88 end
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89 end
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90
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91 function new_external_provider(host)
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92 local provider = { name = "external" };
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93
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94 function provider.test_password(username, password)
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95 return do_query("auth", username, password);
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96 end
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97
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98 function provider.set_password(username, password)
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99 return do_query("setpass", username, password);
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100 end
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101
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102 function provider.user_exists(username)
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103 return do_query("isuser", username);
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104 end
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105
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106 function provider.create_user(username, password) return nil, "Account creation/modification not available."; end
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107
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108 function provider.get_sasl_handler()
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109 local realm = module:get_option("sasl_realm") or module.host;
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110 local testpass_authentication_profile = {
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111 plain_test = function(username, password, realm)
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112 local prepped_username = nodeprep(username);
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113 if not prepped_username then
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114 log("debug", "NODEprep failed on username: %s", username);
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115 return "", nil;
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116 end
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117 return usermanager.test_password(prepped_username, password, realm), true;
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118 end,
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119 };
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120 return new_sasl(realm, testpass_authentication_profile);
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121 end
152
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122
158
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123 function provider.is_admin(jid)
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124 local admins = config.get(host, "core", "admins");
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125 if admins ~= config.get("*", "core", "admins") then
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126 if type(admins) == "table" then
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127 jid = jid_bare(jid);
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128 for _,admin in ipairs(admins) do
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129 if admin == jid then return true; end
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130 end
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131 elseif admins then
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132 log("error", "Option 'admins' for host '%s' is not a table", host);
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133 end
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134 end
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135 return usermanager.is_admin(jid); -- Test whether it's a global admin instead
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136 end
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137
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138 return provider;
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139 end
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140
168
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141 module:add_item("auth-provider", new_external_provider(module.host));