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/*
backend code for provisioning a Samba4 server
Copyright Andrew Tridgell 2005
Released under the GNU GPL v2 or later
*/
/* used to generate sequence numbers for records */
provision_next_usn = 1;
sys = sys_init();
/*
find a user or group from a list of possibilities
*/
function findnss()
{
var i;
assert(arguments.length >= 2);
var nssfn = arguments[0];
for (i=1;i<arguments.length;i++) {
if (nssfn(arguments[i]) != undefined) {
return arguments[i];
}
}
printf("Unable to find user/group for %s\n", arguments[1]);
assert(i<arguments.length);
}
/*
add a foreign security principle
*/
function add_foreign(str, sid, desc, unixname)
{
var add = "
dn: CN=${SID},CN=ForeignSecurityPrincipals,${BASEDN}
objectClass: top
objectClass: foreignSecurityPrincipal
cn: ${SID}
description: ${DESC}
instanceType: 4
whenCreated: ${LDAPTIME}
whenChanged: ${LDAPTIME}
uSNCreated: 1
uSNChanged: 1
showInAdvancedViewOnly: TRUE
name: ${SID}
objectGUID: ${NEWGUID}
objectSid: ${SID}
objectCategory: CN=Foreign-Security-Principal,CN=Schema,CN=Configuration,${BASEDN}
unixName: ${UNIXNAME}
";
var sub = new Object();
sub.SID = sid;
sub.DESC = desc;
sub.UNIXNAME = unixname;
return str + substitute_var(add, sub);
}
/*
return current time as a nt time string
*/
function nttime()
{
return "" + sys.nttime();
}
/*
return current time as a ldap time string
*/
function ldaptime()
{
return sys.ldaptime(sys.nttime());
}
/*
return a date string suitable for a dns zone serial number
*/
function datestring()
{
var t = sys.gmtime(sys.nttime());
return sprintf("%04u%02u%02u%02u",
t.tm_year+1900, t.tm_mon+1, t.tm_mday, t.tm_hour);
}
/*
return first host IP
*/
function hostip()
{
var list = sys.interfaces();
return list[0];
}
/*
return current time as a ldap time string
*/
function nextusn()
{
provision_next_usn = provision_next_usn+1;
return provision_next_usn;
}
/*
return first part of hostname
*/
function hostname()
{
var s = split(".", sys.hostname());
return s[0];
}
/*
setup a ldb in the private dir
*/
function setup_ldb(ldif, dbname, subobj)
{
var extra = "";
var ldb = ldb_init();
if (arguments.length == 4) {
extra = arguments[3];
}
var dbfile = lpGet("private dir") + "/" + dbname;
var src = lpGet("setup directory") + "/" + ldif;
sys.unlink(dbfile);
var data = sys.file_load(src);
data = data + extra;
data = substitute_var(data, subobj);
var db = ldb.connect(dbfile);
assert(db != undefined);
ok = ldb.add(db, data);
assert(ok);
}
/*
setup a file in the private dir
*/
function setup_file(template, fname, subobj)
{
var f = lpGet("private dir") + "/" + fname;
var src = lpGet("setup directory") + "/" + template;
sys.unlink(f);
var data = sys.file_load(src);
data = substitute_var(data, subobj);
ok = sys.file_save(f, data);
assert(ok);
}
/*
provision samba4 - caution, this wipes all existing data!
*/
function provision(subobj, message)
{
var data = "";
/*
some options need to be upper/lower case
*/
subobj.REALM = strlower(subobj.REALM);
subobj.HOSTNAME = strlower(subobj.HOSTNAME);
subobj.DOMAIN = strupper(subobj.DOMAIN);
subobj.NETBIOSNAME = strupper(subobj.HOSTNAME);
data = add_foreign(data, "S-1-5-7", "Anonymous", "${NOBODY}");
data = add_foreign(data, "S-1-1-0", "World", "${NOGROUP}");
data = add_foreign(data, "S-1-5-2", "Network", "${NOGROUP}");
data = add_foreign(data, "S-1-5-18", "System", "${ROOT}");
data = add_foreign(data, "S-1-5-11", "Authenticated Users", "${USERS}");
provision_next_usn = 1;
message("Setting up hklm.ldb\n");
setup_ldb("hklm.ldif", "hklm.ldb", subobj);
message("Setting up sam.ldb\n");
setup_ldb("provision.ldif", "sam.ldb", subobj, data);
message("Setting up rootdse.ldb\n");
setup_ldb("rootdse.ldif", "rootdse.ldb", subobj);
message("Setting up secrets.ldb\n");
setup_ldb("secrets.ldif", "secrets.ldb", subobj);
message("Setting up DNS zone file\n");
setup_file("provision.zone", subobj.DNSDOMAIN + ".zone", subobj);
}
/*
guess reasonably default options for provisioning
*/
function provision_guess()
{
var subobj = new Object();
subobj.REALM = lpGet("realm");
subobj.DOMAIN = lpGet("workgroup");
subobj.HOSTNAME = hostname();
subobj.HOSTIP = hostip();
subobj.DOMAINGUID = randguid();
subobj.DOMAINSID = randsid();
subobj.HOSTGUID = randguid();
subobj.INVOCATIONID = randguid();
subobj.KRBTGTPASS = randpass(12);
subobj.MACHINEPASS = randpass(12);
subobj.ADMINPASS = randpass(12);
subobj.DEFAULTSITE = "Default-First-Site-Name";
subobj.NEWGUID = randguid;
subobj.NTTIME = nttime;
subobj.LDAPTIME = ldaptime;
subobj.DATESTRING = datestring;
subobj.USN = nextusn;
subobj.ROOT = findnss(getpwnam, "root");
subobj.NOBODY = findnss(getpwnam, "nobody");
subobj.NOGROUP = findnss(getgrnam, "nogroup", "nobody");
subobj.WHEEL = findnss(getgrnam, "wheel", "root");
subobj.USERS = findnss(getgrnam, "users", "guest", "other");
subobj.DNSDOMAIN = strlower(subobj.REALM);
subobj.DNSNAME = sprintf("%s.%s",
strlower(subobj.HOSTNAME),
subobj.DNSDOMAIN);
subobj.BASEDN = "DC=" + join(",DC=", split(".", subobj.REALM));
return subobj;
}
return 0;
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