prosody-modules
a754f7e380b2
mod_auth_ldap/mod_auth_ldap.lua

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mod_auth_ldap/mod_auth_ldap.lua @ 4764:a754f7e380b2

mod_dnsupdate: Rewrite port config vs DNS comparison code I'm not sure if it was correct, which means it was hard to understand and thus needed to be simplified. Hope this accomplishes that.
author Kim Alvefur <zash@zash.se>
date Mon, 08 Nov 2021 23:03:14 +0100
parent 3869:f2b29183ef08
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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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 module:get_option_string("ldap_admins")); -- COMPAT with mistake in documentation
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22 local host = ldap_filter_escape(module:get_option_string("realm", module.host));
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23
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24 -- Initiate connection
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25 local ld = nil;
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26 module.unload = function() if ld then pcall(ld, ld.close); end end
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28 function ldap_do_once(method, ...)
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29 if ld == nil then
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30 local err;
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31 ld, err = lualdap.open_simple(ldap_server, ldap_rootdn, ldap_password, ldap_tls);
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32 if not ld then return nil, err, "reconnect"; end
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33 end
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34
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35 -- luacheck: ignore 411/success
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36 local success, iterator, invariant, initial = pcall(ld[method], ld, ...);
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37 if not success then ld = nil; return nil, iterator, "search"; end
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39 local success, dn, attr = pcall(iterator, invariant, initial);
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40 if not success then ld = nil; return success, dn, "iter"; end
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42 return dn, attr, "return";
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43 end
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44
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45 function ldap_do(method, retry_count, ...)
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46 local dn, attr, where;
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47 for _=1,1+retry_count do
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48 dn, attr, where = ldap_do_once(method, ...);
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49 if dn or not(attr) then break; end -- nothing or something found
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50 module:log("warn", "LDAP: %s %s (in %s)", tostring(dn), tostring(attr), where);
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51 -- otherwise retry
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52 end
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53 if not dn and attr then
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54 module:log("error", "LDAP: %s", tostring(attr));
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55 end
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56 return dn, attr;
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57 end
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58
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59 function get_user(username)
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60 module:log("debug", "get_user(%q)", username);
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61 return ldap_do("search", 2, {
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62 base = ldap_base;
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63 scope = ldap_scope;
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64 sizelimit = 1;
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65 filter = ldap_filter:gsub("%$(%a+)", {
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66 user = ldap_filter_escape(username);
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67 host = host;
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68 });
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69 });
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70 end
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71
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72 local provider = {};
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73
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74 function provider.create_user(username, password) -- luacheck: ignore 212
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75 return nil, "Account creation not available with LDAP.";
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76 end
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77
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78 function provider.user_exists(username)
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79 return not not get_user(username);
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80 end
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81
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82 function provider.set_password(username, password)
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83 local dn, attr = get_user(username);
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84 if not dn then return nil, attr end
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85 if attr.userPassword == password then return true end
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86 return ldap_do("modify", 2, dn, { '=', userPassword = password });
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87 end
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88
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89 if ldap_mode == "getpasswd" then
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90 function provider.get_password(username)
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91 local dn, attr = get_user(username);
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92 if dn and attr then
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93 return attr.userPassword;
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94 end
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95 end
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96
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97 function provider.test_password(username, password)
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98 return provider.get_password(username) == password;
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99 end
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100
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101 function provider.get_sasl_handler()
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102 return new_sasl(module.host, {
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103 plain = function(sasl, username) -- luacheck: ignore 212/sasl
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104 local password = provider.get_password(username);
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105 if not password then return "", nil; end
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106 return password, true;
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107 end
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108 });
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109 end
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110 elseif ldap_mode == "bind" then
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111 local function test_password(userdn, password)
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112 local ok, err = lualdap.open_simple(ldap_server, userdn, password, ldap_tls);
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113 if not ok then
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114 module:log("debug", "ldap open_simple error: %s", err);
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115 end
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116 return not not ok;
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
117 end
293
d76f47a608ab mod_auth_ldap: Convert to real line endings
Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
118
1274
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
119 function provider.test_password(username, password)
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
120 local dn = get_user(username);
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
121 if not dn then return end
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
122 return test_password(dn, password)
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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 function provider.get_sasl_handler()
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
126 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
127 plain_test = function(sasl, username, password) -- luacheck: ignore 212/sasl
1274
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
128 return provider.test_password(username, password), true;
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
129 end
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
130 });
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
131 end
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
132 else
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Kim Alvefur <zash@zash.se>
parents: 1273
diff changeset
133 module:log("error", "Unsupported ldap_mode %s", tostring(ldap_mode));
293
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Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
134 end
d76f47a608ab mod_auth_ldap: Convert to real line endings
Matthew Wild <mwild1@gmail.com>
parents: 286
diff changeset
135
2056
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
136 if ldap_admins then
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
137 function provider.is_admin(jid)
3869
f2b29183ef08 mod_auth_ldap, mod_auth_ldap2: Ensure is_admin() checks of remote JIDs never return positive
Matthew Wild <mwild1@gmail.com>
parents: 3566
diff changeset
138 local username, user_host = jid_split(jid);
f2b29183ef08 mod_auth_ldap, mod_auth_ldap2: Ensure is_admin() checks of remote JIDs never return positive
Matthew Wild <mwild1@gmail.com>
parents: 3566
diff changeset
139 if user_host ~= module.host then
f2b29183ef08 mod_auth_ldap, mod_auth_ldap2: Ensure is_admin() checks of remote JIDs never return positive
Matthew Wild <mwild1@gmail.com>
parents: 3566
diff changeset
140 return false;
f2b29183ef08 mod_auth_ldap, mod_auth_ldap2: Ensure is_admin() checks of remote JIDs never return positive
Matthew Wild <mwild1@gmail.com>
parents: 3566
diff changeset
141 end
2056
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
142 return ldap_do("search", 2, {
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
143 base = ldap_base;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
144 scope = ldap_scope;
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Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
145 sizelimit = 1;
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
146 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
147 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
148 host = host;
e16593e7d482 mod_auth_ldap: Add support for having admin status indicated in LDAP
Kim Alvefur <zash@zash.se>
parents: 1987
diff changeset
149 });
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 end
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
814
881ec9919144 mod_auth_*: Use module:provides(), and don't explicitly specify provider.name.
Waqas Hussain <waqas20@gmail.com>
parents: 342
diff changeset
154 module:provides("auth", provider);