Mercurial > prosody-modules

annotate mod_auth_external/mod_auth_external.lua @ 234:abcb59ab355c

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Add new motd_sequential module. This module lets you define numbered messages shown to each user in order, but only once per user, and persistent across server restarts. Useful for notifying users of added features and changes in an incremental fashion.
author Jeff Mitchell <jeffrey.mitchell@gmail.com>
date Wed, 04 Aug 2010 22:29:51 +0000
parents 3da3d6480e65
children 4c3abf1a9b5a
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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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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
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34 local function send_query(text)
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35 if pid and lpc.wait(pid,1) ~= nil then
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36 log("debug","error, process died, force reopen");
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37 pid=nil;
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38 end
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39 if not pid then
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40 log("debug", "Opening process " .. command);
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41 -- proc = process.popen(command);
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42 pid, writefile, readfile = lpc.run(command);
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43 end
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44 -- if not proc then
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45 if not pid then
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46 log("debug", "Process failed to open");
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47 return nil;
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48 end
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49 -- proc:write(text);
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50 -- proc:flush();
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51
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52 writefile:write(text);
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53 writefile:flush();
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54 if script_type == "ejabberd" then
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55 -- return proc:read(4); -- FIXME do properly
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56 return readfile:read(4); -- FIXME do properly
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57 elseif script_type == "generic" then
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58 -- return proc:read(1);
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59 return readfile:read();
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60 end
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61 end
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62
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63 function do_query(kind, username, password)
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64 if not username then return nil, "not-acceptable"; end
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65 username = nodeprep(username);
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66 if not username then return nil, "jid-malformed"; end
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67
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68 local query = (password and "%s:%s:%s:%s" or "%s:%s:%s"):format(kind, username, host, password);
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69 local len = #query
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70 if len > 1000 then return nil, "policy-violation"; end
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71
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72 if script_type == "ejabberd" then
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73 local lo = len % 256;
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74 local hi = (len - lo) / 256;
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75 query = string.char(hi, lo)..query;
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76 end
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77 if script_type == "generic" then
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78 query = query..'\n';
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79 end
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80
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81 local response = send_query(query);
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82 if (script_type == "ejabberd" and response == "\0\2\0\0") or
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83 (script_type == "generic" and response == "0") then
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84 return nil, "not-authorized";
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85 elseif (script_type == "ejabberd" and response == "\0\2\0\1") or
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86 (script_type == "generic" and response == "1") then
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87 return true;
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88 else
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89 log("debug", "Nonsense back");
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90 --proc:close();
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91 --proc = nil;
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92 return nil, "internal-server-error";
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93 end
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94 end
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95
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96 function new_external_provider(host)
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97 local provider = { name = "external" };
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98
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99 function provider.test_password(username, password)
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100 return do_query("auth", username, password);
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101 end
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102
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103 function provider.set_password(username, password)
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104 return do_query("setpass", username, password);
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105 end
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106
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107 function provider.user_exists(username)
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108 return do_query("isuser", username);
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109 end
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110
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111 function provider.create_user(username, password) return nil, "Account creation/modification not available."; end
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112
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113 function provider.get_sasl_handler()
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114 local realm = module:get_option("sasl_realm") or module.host;
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115 local testpass_authentication_profile = {
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116 plain_test = function(username, password, realm)
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117 local prepped_username = nodeprep(username);
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118 if not prepped_username then
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119 log("debug", "NODEprep failed on username: %s", username);
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120 return "", nil;
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121 end
217
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122 return usermanager.test_password(prepped_username, realm, password), true;
166
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123 end,
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124 };
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125 return new_sasl(realm, testpass_authentication_profile);
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126 end
152
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127
158
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128 function provider.is_admin(jid)
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129 local admins = config.get(host, "core", "admins");
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130 if admins ~= config.get("*", "core", "admins") then
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131 if type(admins) == "table" then
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132 jid = jid_bare(jid);
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133 for _,admin in ipairs(admins) do
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134 if admin == jid then return true; end
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135 end
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136 elseif admins then
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137 log("error", "Option 'admins' for host '%s' is not a table", host);
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138 end
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139 end
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140 return usermanager.is_admin(jid); -- Test whether it's a global admin instead
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141 end
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142
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143 return provider;
152
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144 end
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145
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146 module:add_item("auth-provider", new_external_provider(module.host));