prosody-modules
59dd0cdae560
mod_auth_ldap/mod_auth_ldap.lua

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mod_auth_ldap/mod_auth_ldap.lua @ 3154:59dd0cdae560

mod_s2s_blacklist: Add a README
author Kim Alvefur <zash@zash.se>
date Thu, 28 Jun 2018 11:42:19 +0200
parent 3098:a81456a13797
child 3188:5c3f3f5a4377
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rev   line source
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1 -- mod_auth_ldap
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2
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3 local jid_split = require "util.jid".split;
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4 local new_sasl = require "util.sasl".new;
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5 local lualdap = require "lualdap";
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6
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7 local function ldap_filter_escape(s)
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8 return (s:gsub("[*()\\%z]", function(c) return ("\\%02x"):format(c:byte()) end));
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9 end
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10
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11 -- Config options
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12 local ldap_server = module:get_option_string("ldap_server", "localhost");
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13 local ldap_rootdn = module:get_option_string("ldap_rootdn", "");
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14 local ldap_password = module:get_option_string("ldap_password", "");
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15 local ldap_tls = module:get_option_boolean("ldap_tls");
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16 local ldap_scope = module:get_option_string("ldap_scope", "subtree");
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17 local ldap_filter = module:get_option_string("ldap_filter", "(uid=$user)"):gsub("%%s", "$user", 1);
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18 local ldap_base = assert(module:get_option_string("ldap_base"), "ldap_base is a required option for ldap");
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19 local ldap_mode = module:get_option_string("ldap_mode", "bind");
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20 local ldap_admins = module:get_option_string("ldap_admin_filter");
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21 local host = ldap_filter_escape(module:get_option_string("realm", module.host));
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22
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23 -- Initiate connection
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24 local ld = nil;
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25 module.unload = function() if ld then pcall(ld, ld.close); end end
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27 function ldap_do_once(method, ...)
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28 if ld == nil then
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29 local err;
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30 ld, err = lualdap.open_simple(ldap_server, ldap_rootdn, ldap_password, ldap_tls);
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31 if not ld then return nil, err, "reconnect"; end
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32 end
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33
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34 -- luacheck: ignore 411/success
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35 local success, iterator, invariant, initial = pcall(ld[method], ld, ...);
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36 if not success then ld = nil; return nil, iterator, "search"; end
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37
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38 module:log("debug", "success = %s, invariant = %s",
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39 tostring(success),
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40 tostring(invariant));
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41
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42 local success, dn, attr = pcall(iterator, invariant, initial);
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43 module:log("debug", "success = %s, dn = %s, attr = %s",
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44 tostring(success),
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45 tostring(dn),
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46 tostring(attr));
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47 if not success then ld = nil; return success, dn, "iter"; end
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48
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49
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50 return dn, attr, "return";
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51 end
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52
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53 function ldap_do(method, retry_count, ...)
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54 local dn, attr, where;
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55 for _=1,1+retry_count do
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56 dn, attr, where = ldap_do_once(method, ...);
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57 if dn or not(attr) then break; end -- nothing or something found
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58 module:log("warn", "LDAP: %s %s (in %s)", tostring(dn), tostring(attr), where);
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59 -- otherwise retry
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60 end
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61 if not dn and attr then
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62 module:log("error", "LDAP: %s", tostring(attr));
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63 end
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64 return dn, attr;
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65 end
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66
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67 function get_user(username)
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68 module:log("debug", "get_user(%q)", username);
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69 return ldap_do("search", 2, {
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70 base = ldap_base;
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71 scope = ldap_scope;
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72 sizelimit = 1;
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73 filter = ldap_filter:gsub("%$(%a+)", {
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74 user = ldap_filter_escape(username);
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75 host = host;
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76 });
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77 });
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78 end
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79
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80 local provider = {};
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81
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82 function provider.create_user(username, password) -- luacheck: ignore 212
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83 return nil, "Account creation not available with LDAP.";
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84 end
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85
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86 function provider.user_exists(username)
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87 return not not get_user(username);
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88 end
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89
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90 function provider.set_password(username, password)
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91 local dn, attr = get_user(username);
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92 if not dn then return nil, attr end
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93 if attr.userPassword == password then return true end
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94 return ldap_do("modify", 2, dn, { '=', userPassword = password });
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95 end
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96
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97 if ldap_mode == "getpasswd" then
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98 function provider.get_password(username)
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99 local dn, attr = get_user(username);
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100 if dn and attr then
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101 return attr.userPassword;
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102 end
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103 end
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104
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105 function provider.test_password(username, password)
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106 return provider.get_password(username) == password;
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107 end
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108
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109 function provider.get_sasl_handler()
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110 return new_sasl(module.host, {
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111 plain = function(sasl, username) -- luacheck: ignore 212/sasl
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112 local password = provider.get_password(username);
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113 if not password then return "", nil; end
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114 return password, true;
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115 end
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116 });
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117 end
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parents: 1273
diff changeset
118 elseif ldap_mode == "bind" then
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Kim Alvefur <zash@zash.se>
parents: 1273
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119 local function test_password(userdn, password)
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Kim Alvefur <zash@zash.se>
parents: 1273
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120 return not not lualdap.open_simple(ldap_server, userdn, password, ldap_tls);
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parents: 1273
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121 end
293
d76f47a608ab mod_auth_ldap: Convert to real line endings
Matthew Wild <mwild1@gmail.com>
parents: 286
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122
1274
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Kim Alvefur <zash@zash.se>
parents: 1273
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123 function provider.test_password(username, password)
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Kim Alvefur <zash@zash.se>
parents: 1273
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124 local dn = get_user(username);
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Kim Alvefur <zash@zash.se>
parents: 1273
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125 if not dn then return end
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Kim Alvefur <zash@zash.se>
parents: 1273
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126 return test_password(dn, password)
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parents: 1273
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127 end
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Kim Alvefur <zash@zash.se>
parents: 1273
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128
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
129 function provider.get_sasl_handler()
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Kim Alvefur <zash@zash.se>
parents: 1273
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130 return new_sasl(module.host, {
2775
8407137c0a3b mod_auth_ldap: Add annotations to ignore harmless warnings [luacheck]
Kim Alvefur <zash@zash.se>
parents: 2774
diff changeset
131 plain_test = function(sasl, username, password) -- luacheck: ignore 212/sasl
1274
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parents: 1273
diff changeset
132 return provider.test_password(username, password), true;
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parents: 1273
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133 end
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Kim Alvefur <zash@zash.se>
parents: 1273
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134 });
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
135 end
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
136 else
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
137 module:log("error", "Unsupported ldap_mode %s", tostring(ldap_mode));
293
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Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
138 end
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Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
139
2056
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
140 if ldap_admins then
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
141 function provider.is_admin(jid)
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
142 local username = jid_split(jid);
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
143 return ldap_do("search", 2, {
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
144 base = ldap_base;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
145 scope = ldap_scope;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
146 sizelimit = 1;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
147 filter = ldap_admins:gsub("%$(%a+)", {
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
148 user = ldap_filter_escape(username);
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
149 host = host;
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
150 });
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
151 });
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
152 end
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
153 end
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
154
814
881ec9919144 mod_auth_*: Use module:provides(), and don't explicitly specify provider.name.
Waqas Hussain <waqas20@gmail.com>
parents: 342
diff changeset
155 module:provides("auth", provider);