prosody-modules
8064b5e346ab
mod_auth_ldap/mod_auth_ldap.lua

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mod_auth_ldap/mod_auth_ldap.lua @ 1893:8064b5e346ab

mod_pubsub_feeds/README: Update wording to be clearer
author Kim Alvefur <zash@zash.se>
date Sat, 03 Oct 2015 16:53:45 +0200
parent 1611:770236ea9678
child 1987:6d7699eda594
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 -- mod_auth_ldap
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2
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3 local new_sasl = require "util.sasl".new;
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4 local lualdap = require "lualdap";
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5 local function ldap_filter_escape(s) return (s:gsub("[*()\\%z]", function(c) return ("\\%02x"):format(c:byte()) end)); end
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6
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7 -- Config options
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8 local ldap_server = module:get_option_string("ldap_server", "localhost");
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9 local ldap_rootdn = module:get_option_string("ldap_rootdn", "");
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10 local ldap_password = module:get_option_string("ldap_password", "");
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11 local ldap_tls = module:get_option_boolean("ldap_tls");
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12 local ldap_scope = module:get_option_string("ldap_scope", "onelevel");
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13 local ldap_filter = module:get_option_string("ldap_filter", "(uid=$user)"):gsub("%%s", "$user", 1);
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14 local ldap_base = assert(module:get_option_string("ldap_base"), "ldap_base is a required option for ldap");
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15 local ldap_mode = module:get_option_string("ldap_mode", "bind");
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16 local host = ldap_filter_escape(module:get_option_string("realm", module.host));
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17
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18 -- Initiate connection
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19 local ld = nil;
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20 module.unload = function() if ld then pcall(ld, ld.close); end end
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22 function ldap_do_once(method, ...)
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23 if ld == nil then
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24 local err;
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25 ld, err = lualdap.open_simple(ldap_server, ldap_rootdn, ldap_password, ldap_tls);
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26 if not ld then return nil, err, "reconnect"; end
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27 end
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28
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29 local success, iterator, invariant, initial = pcall(ld[method], ld, ...);
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30 if not success then ld = nil; return nil, iterator, "search"; end
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32 local success, dn, attr = pcall(iterator, invariant, initial);
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33 if not success then ld = nil; return success, dn, "iter"; end
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34
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35 return dn, attr, "return";
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36 end
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37
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38 function ldap_do(method, retry_count, ...)
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39 local dn, attr, where;
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40 for i=1,1+retry_count do
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41 dn, attr, where = ldap_do_once(method, ...);
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42 if dn or not(attr) then break; end -- nothing or something found
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43 module:log("warn", "LDAP: %s %s (in %s)", tostring(dn), tostring(attr), where);
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44 -- otherwise retry
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45 end
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46 if not dn and attr then
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47 module:log("error", "LDAP: %s", tostring(attr));
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48 end
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49 return dn, attr;
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50 end
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51
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52 local function get_user(username)
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53 module:log("debug", "get_user(%q)", username);
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54 return ldap_do("search", 2, {
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55 base = ldap_base;
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56 scope = ldap_scope;
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57 sizelimit = 1;
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58 filter = ldap_filter:gsub("%$(%a+)", {
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59 user = ldap_filter_escape(username);
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60 host = host;
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61 });
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62 });
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63 end
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64
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65 local provider = {};
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66
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67 function provider.create_user(username, password)
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68 return nil, "Account creation not available with LDAP.";
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69 end
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70
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71 function provider.user_exists(username)
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72 return not not get_user(username);
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73 end
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74
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75 function provider.set_password(username, password)
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76 local dn, attr = get_user(username);
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77 if not dn then return nil, attr end
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78 if attr.userPassword == password then return true end
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79 return ldap_do("modify", 2, dn, { '=', userPassword = password });
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80 end
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81
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82 if ldap_mode == "getpasswd" then
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83 function provider.get_password(username)
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84 local dn, attr = get_user(username);
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85 if dn and attr then
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86 return attr.userPassword;
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87 end
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88 end
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89
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90 function provider.test_password(username, password)
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91 return provider.get_password(username) == password;
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92 end
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93
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94 function provider.get_sasl_handler()
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95 return new_sasl(module.host, {
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96 plain = function(sasl, username)
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97 local password = provider.get_password(username);
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98 if not password then return "", nil; end
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99 return password, true;
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100 end
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101 });
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102 end
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103 elseif ldap_mode == "bind" then
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104 local function test_password(userdn, password)
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105 return not not lualdap.open_simple(ldap_server, userdn, password, ldap_tls);
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106 end
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107
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108 function provider.test_password(username, password)
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109 local dn = get_user(username);
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110 if not dn then return end
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111 return test_password(dn, password)
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112 end
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113
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114 function provider.get_sasl_handler()
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115 return new_sasl(module.host, {
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116 plain_test = function(sasl, username, password)
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117 return provider.test_password(username, password), true;
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118 end
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119 });
4b15437d6c56 mod_auth_ldap: Add support for binding
Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
120 end
4b15437d6c56 mod_auth_ldap: Add support for binding
Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
121 else
4b15437d6c56 mod_auth_ldap: Add support for binding
Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
122 module:log("error", "Unsupported ldap_mode %s", tostring(ldap_mode));
293
d76f47a608ab mod_auth_ldap: Convert to real line endings
Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
123 end
d76f47a608ab mod_auth_ldap: Convert to real line endings
Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
124
814
881ec9919144 mod_auth_*: Use module:provides(), and don't explicitly specify provider.name.
Waqas Hussain <waqas20@gmail.com>
parents: 342
diff changeset
125 module:provides("auth", provider);