#!/usr/bin/perl -w use strict; use Socket; use Getopt::Long; my $opt_hostname = `hostname`; chomp $opt_hostname; my $opt_hostip; my $opt_realm; my $opt_domain; my $opt_adminpass; my $opt_nobody; my $opt_nogroup; my $opt_wheel; my $opt_users; my $dnsdomain; my $netbiosname; my $dnsname; my $basedn; my $defaultsite = "Default-First-Site-Name"; # return the current NTTIME as an integer sub nttime() { my $t = time(); $t += (369.0*365.25*24*60*60-(3.0*24*60*60+6.0*60*60)); $t *= 1.0e7; return sprintf("%lld", $t); } # generate a random guid. Not a good algorithm. sub randguid() { my $r1 = int(rand(2**32)); my $r2 = int(rand(2**16)); my $r3 = int(rand(2**16)); my $r4 = int(rand(2**16)); my $r5 = int(rand(2**32)); my $r6 = int(rand(2**16)); return sprintf("%08x-%04x-%04x-%04x-%08x%04x", $r1, $r2, $r3, $r4, $r5, $r6); } my $domainguid = randguid(); my $hostguid = randguid(); sub randsid() { return sprintf("S-1-5-21-%d-%d-%d", int(rand(10**8)), int(rand(10**8)), int(rand(10**8))); } my $domainsid = randsid(); # generate a random password. Poor algorithm :( sub randpass() { my $pass = ""; my $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ%\$!~"; for (my $i=0;$i<8;$i++) { my $c = int(rand(length($chars))); $pass .= substr($chars, $c, 1); } return $pass; } sub ldaptime() { my ($sec,$min,$hour,$mday,$mon,$year,$wday,$yday) = gmtime(time); return sprintf "%04u%02u%02u%02u%02u%02u.0Z", $year+1900, $mon+1, $mday, $hour, $min, $sec; } ####################### # substitute a single variable sub substitute($) { my $var = shift; if ($var eq "BASEDN") { return $basedn; } if ($var eq "DOMAINSID") { return $domainsid; } if ($var eq "DOMAIN") { return $opt_domain; } if ($var eq "REALM") { return $opt_realm; } if ($var eq "DNSDOMAIN") { return $dnsdomain; } if ($var eq "HOSTNAME") { return $opt_hostname; } if ($var eq "NETBIOSNAME") { return $netbiosname; } if ($var eq "DNSNAME") { return $dnsname; } if ($var eq "HOSTIP") { return $opt_hostip; } if ($var eq "LDAPTIME") { return ldaptime(); } if ($var eq "NEWGUID") { return randguid(); } if ($var eq "DOMAINGUID") { return $domainguid; } if ($var eq "HOSTGUID") { return $hostguid; } if ($var eq "DEFAULTSITE") { return $defaultsite; } if ($var eq "ADMINPASS") { return $opt_adminpass; } if ($var eq "NTTIME") { return "" . nttime(); } if ($var eq "WHEEL") { return $opt_wheel; } if ($var eq "NOBODY") { return $opt_nobody; } if ($var eq "NOGROUP") { return $opt_nogroup; } if ($var eq "USERS") { return $opt_users; } die "ERROR: Uknown substitution variable $var\n"; } ##################################################################### # write a string into a file sub FileSave($$) { my($filename) = shift; my($v) = shift; local(*FILE); open(FILE, ">$filename") || die "can't open $filename"; print FILE $v; close(FILE); } ##################################################################### # read a file into a string sub FileLoad($) { my($filename) = shift; local(*INPUTFILE); open(INPUTFILE, $filename) || return undef; my($saved_delim) = $/; undef $/; my($data) = ; close(INPUTFILE); $/ = $saved_delim; return $data; } ####################################################################### # add a foreign security principle sub add_foreign($$$) { my $sid = shift; my $desc = shift; my $unixname = shift; return " dn: CN=$sid,CN=ForeignSecurityPrincipals,\${BASEDN} objectClass: top objectClass: foreignSecurityPrincipal cn: $sid description: $desc distinguishedName: CN=$sid,CN=ForeignSecurityPrincipals,\${BASEDN} 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 "; } ############################################ # show some help sub ShowHelp() { print " Samba4 provisioning provision.pl [options] --realm REALM set realm --domain DOMAIN set domain --hostname HOSTNAME set hostname --hostip IPADDRESS set ipaddress --adminpass PASSWORD choose admin password (otherwise random) --nobody USERNAME choose 'nobody' user --nogroup GROUPNAME choose 'nogroup' group --wheel GROUPNAME choose 'wheel' privileged group --users GROUPNAME choose 'users' group You must provide at least a realm and domain "; exit(1); } my $opt_help; GetOptions( 'help|h|?' => \$opt_help, 'realm=s' => \$opt_realm, 'domain=s' => \$opt_domain, 'hostname=s' => \$opt_hostname, 'hostip=s' => \$opt_hostip, 'adminpass=s' => \$opt_adminpass, 'nobody=s' => \$opt_nobody, 'nogroup=s' => \$opt_nogroup, 'wheel=s' => \$opt_wheel, 'users=s' => \$opt_users, ); if ($opt_help || !$opt_realm || !$opt_domain || !$opt_hostname) { ShowHelp(); } $opt_realm=uc($opt_realm); $opt_domain=uc($opt_domain); $opt_hostname=lc($opt_hostname); $netbiosname=uc($opt_hostname); if (!$opt_hostip) { my $hip = gethostbyname($opt_hostname); if (defined $hip) { $opt_hostip = inet_ntoa($hip); } else { $opt_hostip = "<0.0.0.0>"; } } print "Provisioning host '$opt_hostname'[$opt_hostip] for domain '$opt_domain' in realm '$opt_realm'\n"; if (!$opt_nobody) { if (defined getpwnam("nobody")) { $opt_nobody = "nobody"; } } if (!$opt_nogroup) { if (defined getgrnam("nogroup")) { $opt_nogroup = "nogroup"; } elsif (defined getgrnam("nobody")) { $opt_nogroup = "nobody"; } } if (!$opt_wheel) { if (defined getgrnam("wheel")) { $opt_wheel = "wheel"; } elsif (defined getgrnam("root")) { $opt_wheel = "root"; } } if (!$opt_users) { if (defined getgrnam("users")) { $opt_users = "users"; } } $opt_nobody || die "Unable to determine a user for 'nobody'\n"; $opt_nogroup || die "Unable to determine a group for 'nogroup'\n"; $opt_users || die "Unable to determine a group for 'user'\n"; $opt_wheel || die "Unable to determine a group for 'wheel'\n"; print "Using nobody='$opt_nobody' nogroup='$opt_nogroup' wheel='$opt_wheel' users='$opt_users'\n"; print "generating ldif ...\n"; $dnsdomain = lc($opt_realm); $dnsname = lc($opt_hostname).".".$dnsdomain; $basedn = "DC=" . join(",DC=", split(/\./, $opt_realm)); my $data = FileLoad("provision.ldif") || die "Unable to load provision.ldif\n"; $data .= add_foreign("S-1-5-7", "Anonymous", "\${NOBODY}"); $data .= add_foreign("S-1-5-18", "System", "root"); $data .= add_foreign("S-1-5-11", "Authenticated Users", "\${USERS}"); if (!$opt_adminpass) { $opt_adminpass = randpass(); print "chose random Administrator password '$opt_adminpass'\n"; } my $res = ""; print "applying substitutions ...\n"; while ($data =~ /(.*?)\$\{(\w*)\}(.*)/s) { my $sub = substitute($2); $res .= "$1$sub"; $data = $3; } $res .= $data; print "saving ldif to newsam.ldif ...\n"; FileSave("newsam.ldif", $res); unlink("newsam.ldb"); print "creating newsam.ldb ...\n"; # allow provisioning to be run from the source directory $ENV{"PATH"} .= ":bin"; system("ldbadd -H newsam.ldb newsam.ldif"); print "done\n"; print "generating dns zone file ...\n"; $data = FileLoad("provision.zone") || die "Unable to load provision.zone\n"; $res = ""; print "applying substitutions ...\n"; while ($data =~ /(.*?)\$\{(\w*)\}(.*)/s) { my $sub = substitute($2); $res .= "$1$sub"; $data = $3; } $res .= $data; print "saving dns zone to newdns.zone ...\n"; FileSave("$dnsdomain.zone", $res); print "done Installation: - Please move newsam.ldb to sam.ldb in the lib/private/ directory of your Samba4 installation - Please use $dnsdomain.zone to in BIND dns server ";