prosody-modules
41565a743cad
mod_auth_ldap/mod_auth_ldap.lua

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mod_auth_ldap/mod_auth_ldap.lua @ 2774:41565a743cad

mod_auth_ldap: Split long line into many [luacheck]
author Kim Alvefur <zash@zash.se>
date Tue, 26 Sep 2017 12:35:08 +0200
parent 2056:e16593e7d482
child 2775:8407137c0a3b
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 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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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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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 local success, iterator, invariant, initial = pcall(ld[method], ld, ...);
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35 if not success then ld = nil; return nil, iterator, "search"; end
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37 local success, dn, attr = pcall(iterator, invariant, initial);
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38 if not success then ld = nil; return success, dn, "iter"; end
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39
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40 return dn, attr, "return";
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41 end
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42
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43 function ldap_do(method, retry_count, ...)
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44 local dn, attr, where;
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45 for i=1,1+retry_count do
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46 dn, attr, where = ldap_do_once(method, ...);
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47 if dn or not(attr) then break; end -- nothing or something found
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48 module:log("warn", "LDAP: %s %s (in %s)", tostring(dn), tostring(attr), where);
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49 -- otherwise retry
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50 end
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51 if not dn and attr then
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52 module:log("error", "LDAP: %s", tostring(attr));
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53 end
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54 return dn, attr;
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55 end
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57 local function get_user(username)
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58 module:log("debug", "get_user(%q)", username);
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59 return ldap_do("search", 2, {
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60 base = ldap_base;
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61 scope = ldap_scope;
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62 sizelimit = 1;
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63 filter = ldap_filter:gsub("%$(%a+)", {
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64 user = ldap_filter_escape(username);
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65 host = host;
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66 });
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67 });
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68 end
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69
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70 local provider = {};
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71
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72 function provider.create_user(username, password)
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73 return nil, "Account creation not available with LDAP.";
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74 end
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75
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76 function provider.user_exists(username)
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77 return not not get_user(username);
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78 end
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79
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80 function provider.set_password(username, password)
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81 local dn, attr = get_user(username);
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82 if not dn then return nil, attr end
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83 if attr.userPassword == password then return true end
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84 return ldap_do("modify", 2, dn, { '=', userPassword = password });
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85 end
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86
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87 if ldap_mode == "getpasswd" then
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88 function provider.get_password(username)
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89 local dn, attr = get_user(username);
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90 if dn and attr then
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91 return attr.userPassword;
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92 end
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93 end
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94
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95 function provider.test_password(username, password)
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96 return provider.get_password(username) == password;
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97 end
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98
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99 function provider.get_sasl_handler()
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100 return new_sasl(module.host, {
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101 plain = function(sasl, username)
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102 local password = provider.get_password(username);
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103 if not password then return "", nil; end
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104 return password, true;
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105 end
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106 });
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107 end
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108 elseif ldap_mode == "bind" then
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109 local function test_password(userdn, password)
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110 return not not lualdap.open_simple(ldap_server, userdn, password, ldap_tls);
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111 end
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112
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113 function provider.test_password(username, password)
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114 local dn = get_user(username);
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115 if not dn then return end
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116 return test_password(dn, password)
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117 end
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118
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119 function provider.get_sasl_handler()
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
120 return new_sasl(module.host, {
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
121 plain_test = function(sasl, username, password)
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
122 return provider.test_password(username, password), true;
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
123 end
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
124 });
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
125 end
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
126 else
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
127 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
128 end
d76f47a608ab mod_auth_ldap: Convert to real line endings
Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
129
2056
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
130 if ldap_admins then
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
131 function provider.is_admin(jid)
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
132 local username = jid_split(jid);
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
133 return ldap_do("search", 2, {
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
134 base = ldap_base;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
135 scope = ldap_scope;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
136 sizelimit = 1;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
137 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
138 user = ldap_filter_escape(username);
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
139 host = host;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
140 });
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
141 });
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
142 end
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
143 end
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
144
814
881ec9919144 mod_auth_*: Use module:provides(), and don't explicitly specify provider.name.
Waqas Hussain <waqas20@gmail.com>
parents: 342
diff changeset
145 module:provides("auth", provider);