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1 {pkgs, lib, config, ...}:
2 let inherit (builtins) baseNameOf readFile;
3 inherit (lib) types;
4 inherit (pkgs.lib) unlinesAttrs;
5 inherit (config.services) openldap;
6 inherit (config.users) ldap;
7 copyFile = file: pkgs.writeText (baseNameOf file) (readFile file);
8 configLDIF = pkgs.writeText "cn=config.ldif" (''
9 dn: cn=config
10 objectClass: olcGlobal
11 #olcPidFile: /run/slapd/slapd.pid
12 # List of arguments that were passed to the server
13 #olcArgsFile: /run/slapd/slapd.args
14 # Read slapd-config(5) for possible values
15 olcLogLevel: none
16 # The tool-threads parameter sets the actual amount of CPU's
17 # that is used for indexing.
18 olcToolThreads: 1
19
20 dn: olcDatabase={-1}frontend,cn=config
21 objectClass: olcDatabaseConfig
22 objectClass: olcFrontendConfig
23 # The maximum number of entries that is returned for a search operation
24 olcSizeLimit: 500
25 # Allow unlimited access to local connection from the local root user
26 olcAccess: to *
27 by dn.exact=gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth manage
28 by * break
29 # Allow unauthenticated read access for schema and base DN autodiscovery
30 olcAccess: to dn.exact=""
31 by * read
32 olcAccess: to dn.base="cn=Subschema"
33 by * read
34
35 dn: olcDatabase=config,cn=config
36 objectClass: olcDatabaseConfig
37 olcRootDN: cn=admin,cn=config
38 # Access to cn=config, system root can be manager
39 # with SASL mechanism (-Y EXTERNAL) over unix socket (-H ldapi://)
40 olcAccess: to *
41 by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage
42 by * break
43
44 dn: cn=schema,cn=config
45 objectClass: olcSchemaConfig
46
47 include: file://${pkgs.openldap}/etc/schema/core.ldif
48 include: file://${pkgs.openldap}/etc/schema/cosine.ldif
49 include: file://${pkgs.openldap}/etc/schema/nis.ldif
50 include: file://${pkgs.openldap}/etc/schema/inetorgperson.ldif
51 include: file://${copyFile openldap/schema/postfix-book.ldif}
52
53 dn: cn=module{0},cn=config
54 objectClass: olcModuleList
55 # Where the dynamically loaded modules are stored
56 #olcModulePath: /usr/lib/ldap
57 olcModuleLoad: back_mdb
58
59 '' + unlinesAttrs (olcSuffix: {conf, olcDbDirectory, ...}:
60 "include: file://" + pkgs.writeText "config.ldif" (conf + ''
61 olcSuffix: ${olcSuffix}
62 olcDbDirectory: ${olcDbDirectory}
63 '')
64 ) openldap.databases);
65 in
66 {
67 imports = [
68 openldap/commonsoft.nix
69 ];
70 options = {
71 services.openldap.domainSuffix = lib.mkOption {
72 type = types.str;
73 default = "dc=${lib.concatStringsSep ",dc=" (lib.splitString "." config.networking.domain)}";
74 description = ''
75 LDAP suffix for config.networking.domain.
76 '';
77 };
78 services.openldap.databases = lib.mkOption {
79 default = {};
80 type = types.attrsOf (types.submodule ({name, options, config, ...}: {
81 options = {
82 conf = lib.mkOption {
83 type = types.lines;
84 description = "The database's config in LDIF.";
85 };
86 data = lib.mkOption {
87 type = types.lines;
88 description = "The database's data in LDIF.";
89 };
90 olcDbDirectory = lib.mkOption {
91 type = types.str;
92 description = "The directory where the database is stored.";
93 default = "${openldap.dataDir}/${name}";
94 };
95 resetData = lib.mkOption {
96 type = types.bool;
97 description = "Whether to reset the data at each start of the slapd service.";
98 default = false;
99 };
100 };
101 }));
102 };
103 };
104 config = {
105 users.ldap = {
106 enable = true;
107 # FIXME: even with the correct LD_LIBRARY_PATH to libnss_ldap.so,
108 # passwd still does not work on LDAP accounts.
109 daemon = {
110 enable = true;
111 extraConfig = ''
112 sasl_mech EXTERNAL
113 '';
114 };
115 server = "ldapi:///";
116 base = "ou=posix,${openldap.domainSuffix}";
117 bind = {
118 #distinguishedName = "cn=admin,${openldap.domainSuffix}";
119 };
120 };
121 services.openldap = {
122 enable = true;
123 dataDir = "/var/db/ldap";
124 configDir = "/var/db/slapd";
125 urlList = [ "ldapi:///" ]; # UNIX socket
126 };
127 systemd.services.openldap = {
128 preStart = ''
129 # NOTE: slapd's config is always re-initialized.
130 rm -rf "${openldap.configDir}"/cn=config \
131 "${openldap.configDir}"/cn=config.ldif
132 install -D -d -m 0700 -o "${openldap.user}" -g "${openldap.group}" "${openldap.configDir}"
133 # NOTE: olcDbDirectory must be created before adding the config.
134 '' +
135 unlinesAttrs (olcSuffix: {data, olcDbDirectory, resetData, ...}:
136 lib.optionalString resetData ''
137 rm -rf "${olcDbDirectory}"
138 '' + ''
139 install -D -d -m 0700 -o "${openldap.user}" -g "${openldap.group}" "${olcDbDirectory}"
140 '') openldap.databases
141 + ''
142 # NOTE: slapd is supposed to be stopped while in preStart,
143 # hence slap* commands can safely be used.
144 umask 0077
145 ${pkgs.openldap}/bin/slapadd -n 0 \
146 -F "${openldap.configDir}" \
147 -l ${configLDIF}
148 chown -R "${openldap.user}:${openldap.group}" "${openldap.configDir}"
149 # NOTE: slapadd(8): To populate the config database slapd-config(5),
150 # use -n 0 as it is always the first database.
151 # It must physically exist on the filesystem prior to this, however.
152 '' +
153 unlinesAttrs (olcSuffix: {data, olcDbDirectory, resetData, ...}:
154 lib.optionalString resetData ''
155 ${pkgs.openldap}/bin/slapadd \
156 -F "${openldap.configDir}" \
157 -l ${pkgs.writeText "data.ldif" data}
158 '' + ''
159 test ! -e "${olcDbDirectory}" ||
160 chown -R "${openldap.user}:${openldap.group}" "${olcDbDirectory}"
161 '') openldap.databases;
162 };
163 };
164 }