2 # This is part of sync-accounts, a tool for synchronising UN*X password data.
5 # Copyright 1999-2000,2002 Ian Jackson <ian@davenant.greenend.org.uk>
6 # Copyright 2000-2001 nCipher Corporation Ltd
8 # sync-accounts is free software; you can redistribute it and/or
9 # modify it under the terms of the GNU General Public License as
10 # published by the Free Software Foundation; either version 3, or (at
11 # your option) any later version.
13 # sync-accounts is distributed in the hope that it will be useful,
14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 # General Public License for more details.
18 # You should already have a copy of the GNU General Public License.
19 # If not, consult the Free Software Foundation's website at
20 # www.fsf.org, or the GNU Project website at www.gnu.org.
22 # $Id: sync-accounts,v 1.25 2007-09-21 21:21:15 ianmdlvl Exp $
26 $configfile= '/etc/sync-accounts';
27 $def_createuser= 'sync-accounts-createuser';
28 $ch_homebase= '/home';
29 $ch_defaultshell= '/bin/sh';
30 $defaultgid= -1; # -1 => usergroups; -2 => nousergroups
31 @groupglobs= [ '.*', 0 ];
34 $file{'passwd','std'}= 'passwd';
35 $file{'shadow','std'}= 'shadow';
36 $file{'group','std'}= 'group';
38 $file{'passwd','bsd'}= 'master.passwd';
39 $file{'shadow','bsd'}= 'shadow-non-existent';
40 $file{'group','bsd'}= 'group';
42 @fields_pw_std= qw(USER PW UID GID COMMENT HOME SHELL);
43 @fields_pw_bsd= qw(USER PW UID GID CLASS CHANGE EXPIRE COMMENT HOME SHELL);
44 fields_fmt('PW','std');
45 fields('GR',qw(GROUP PW GID USERS));
46 fields('SP',qw(USER PW DAYSCHGD DAYSFIX DAYSEXP DAYSWARN DAYSEXPDIS DAYSDISD RESERVED));
47 # The name field had better always be field 0 !
50 foreach $x (@unlocks) {
51 ($fn, $style, $arg) = @$x;
52 &{ "unlock_$style" } ( $fn,$arg );
59 foreach $v (@l) { $vn= "${pfx}_$v"; $$vn = $i++; }
60 $vn= "${pfx}_fields"; $$vn= $i;
66 $vn= "fields_pw_$fmt";
67 die "unknown format $fmt\n" unless defined @$vn;
74 my ($pfx,$name,@field_val_list) = @_;
75 my (@rv, $vn, $fn, $v, $i);
78 for ($i=0; $i<$$vn; $i++) { $rv[$i]= ''; }
79 die "@field_val_list ?" if @field_val_list % 2;
81 while (@field_val_list) {
82 ($fn,$v,@field_val_list) = @field_val_list;
84 #print STDERR ">$fn|$v|$vn|$$vn<\n";
91 $cdays= int(time/86400);
93 @envs_createuser= qw(USER UID GID COMMENT HOME SHELL);
95 if (@ARGV == 1 && length $ENV{'SYNC_ACCOUNTS_RUNVIA_INFO'}) {
97 s/\%([0-9a-f][0-9a-f])/ pack("C", hex $1) /ge;
99 } split(/\:/, $ENV{'SYNC_ACCOUNTS_RUNVIA_INFO'});
100 delete $ENV{'SYNC_ACCOUNTS_RUNVIA_INFO'};
102 $ENV{"SYNC_ACCOUNTS_RUNVIA_LOCKEDGOT_$ta"} = $ARGV[0];
108 while ($ARGV[0] =~ m/^-/) {
120 die "unknown option $_\n";
124 die "hosts must not be specified with -q\n" if @ARGV && $display;
126 for $h (@ARGV) { $wanthost{$h}= 1; }
128 open CF,"< $configfile" or die "$configfile: $!";
130 sub fetchfile (\%$) {
131 my ($ary_ref,$get_str) = @_;
134 open G,"$get_str" or die "$get_str: $!";
137 m/^([^:]+)\:/ or die "$ch_name: $get_str:$.: $_ ?\n";
138 $ary_ref->{$1}= [ split(/\:/,$_,-1) ];
140 close G; $? and die "$ch_name: $get_str: exit code $?\n";
143 sub lockstyle_ ($$) {
146 die "$configfile:$.: locking mechanism for $fn not".
147 " defined (use lockpasswd/lockgroup)\n";
154 $lock= "$fn$lock" unless $lock =~ m,^/,;
158 sub lock_none ($$) { return (abslock(@_))[0]; }
159 sub unlock_none ($$) { }
162 my ($fn,$lock) = abslock(@_);
163 link $fn,$lock or die "cannot lock $fn by creating $lock: $!\n";
166 sub unlock_link ($$) {
167 my ($fn,$lock) = abslock(@_);
168 unlink $lock or warn "unable to unlock by removing $lock: $!\n";
171 sub lock_runvia ($$) {
174 $evn= "SYNC_ACCOUNTS_RUNVIA_LOCKEDGOT_$fn";
175 return $ENV{$evn} if exists $ENV{$evn};
178 s/\W/ sprintf("%%%02x", unpack("C", $&)) /ge;
181 $ENV{'SYNC_ACCOUNTS_RUNVIA_INFO'}= join(":", @na);
183 delete $ENV{'VISUAL'};
184 exec $lock; die "cannot lock $fn by executing $lock: $!\n";
186 sub unlock_runvia ($$) { }
188 sub fetchownfile (\@$$$$) {
189 my ($ary_ref,$fn_str,$nfields,$style,$lock_arg) = @_;
190 my ($fn_use, $record, $fn_emsg);
193 $fn_use= &{ "lock_$style" } ($fn_str, $lock_arg);
194 push @unlocks, [ $fn_str, $style, $lock_arg ];
195 $savebackto{$fn_str}= $fn_use;
197 $fn_use= $fn_emsg= "/etc/".$file{$fn_str,$PW_format};
199 open O,"$fn_use" or die "$fn_use ($fn_str): $!";
202 if (m/^\#/ || !m/\S/) {
205 $record= [ split(/\:/,$_,-1) ];
206 die "$fn_emsg:$.:wrong number of fields:\`$_'\n"
207 unless @$record == $nfields;
209 push @$ary_ref, $record;
211 close O or die "$fn_use ($fn_str): $!";
215 print "$diagstr: $_[0]\n" or die $!;
218 sub regroupglobs () {
219 $nogroups= (@groupglobs == 1 &&
220 $groupglobs[0]->[0] eq '.*' &&
221 !$groupglobs[0]->[1]);
222 $ggfunc= "sub wantsyncgroup {\n \$_= \$_[0];\n return\n";
223 for $g (@groupglobs) { $ggfunc.= " m/^$g->[0]\$/ ? $g->[1] :\n"; }
224 $ggfunc.= " die;\n};\n1;\n";
225 #print STDERR "$ggfunc\n";
230 if (!$own_fetchedpasswd) {
231 #print STDERR ">$PW_fields<\n";
232 fetchownfile(@ownpasswd,'passwd',
233 $PW_fields, $ch_lockstyle_passwd, $ch_lock_passwd);
234 $shadowfile= $file{'shadow',$PW_format};
235 if (stat("/etc/$shadowfile")) {
237 $own_fetchedshadow= 1;
238 fetchownfile(@ownshadow,'shadow',$SP_fields,'none','');
239 } elsif ($! == &ENOENT) {
242 die "unable to check for /etc/$shadowfile: $!\n";
244 $own_fetchedpasswd= 1;
246 if (!$own_fetchedgroup) {
247 fetchownfile(@owngroup,'group',$GR_fields,
248 $ch_lockstyle_group, $ch_lock_group);
249 $own_fetchedgroup= 1;
251 #print STDERR "fetchown() -> $#ownpasswd $#owngroup\n";
255 my ($useuid,$foruser) = @_;
256 for $e (@ownpasswd) {
258 if ($e->[$PW_USER] ne $foruser && $e->[$PW_UID] == $useuid) {
259 diag("uid clash with $e->[$PW_USER] (uid $e->[$PW_UID])");
267 eval $_[0] or die "$_[0] // $@";
270 sub copyfield ($$$$) {
271 my ($file,$entry,$field,$value) = @_;
272 must_eval("\$ary_ref= \\\@own$file; 1;");
273 #print STDERR "copyfield($file,$entry,$field,$value)\n";
275 #print STDERR "copyfield($file,$entry,$field,$value) $e->[0] $e->[field] ".join(':',@$e)."\n";
276 next unless $e->[0] eq $entry;
277 next if $e->[$field] eq $value;
278 $e->[$field]= $value;
279 must_eval("\$modified$file= 1; 1;");
284 return if $ch_fetchedpasswd;
285 die "$configfile:$.: getpasswd not specified for host $ch_name\n"
286 unless length $ch_getpasswd;
288 fetchfile(%rempasswd,"$ch_getpasswd |");
289 if (length $ch_getshadow) {
290 fetchfile(%remshadow,"$ch_getshadow |");
291 for $k (keys %rempasswd) {
292 $rempasswd{$k}->[$REM_PW]= 'xx' unless length $rempasswd{$k}->[$REM_PW];
294 for $k (keys %remshadow) {
295 next unless exists $rempasswd{$k};
296 $rempasswd{$k}->[$REM_PW]= $remshadow{$k}->[$SP_PW];
299 $ch_fetchedpasswd= 1;
303 return if $ch_fetchedgroup;
304 die "$configfile:$.: getgroup not specified for host $ch_name\n"
305 unless length $ch_getgroup;
306 fetchfile(%remgroup,"$ch_getgroup |");
310 sub syncusergroup ($$) {
313 return 1 if $defaultgid != -1;
314 #print STDERR "syncusergroup($lu,$luid)\n";
319 $samename= $e->[$GR_GROUP] eq $lu;
320 $sameid= $e->[$GR_GID] eq $luid;
321 next unless $samename || $sameid;
322 if (!$samename || !$sameid) {
323 diag("local group $e->[$GR_GROUP] ($e->[$GR_GID]) mismatch vs.".
324 " local user $lu ($luid)");
328 diag("per-user group $lu ($luid) duplicated");
334 return 1 if $ugfound;
336 if (!length $opt_createuser) {
337 diag("account creation not enabled, not creating per-user group");
340 push @owngroup, [ newentry('GR', $lu,
349 return if $hostheaddone eq $th;
350 print "\n\n" or die $! if length $hostheaddone;
351 print "==== $th ====\n" or die $!;
359 #print STDERR "syncuser($lu,$ru)\n";
360 return if $doneuser{$lu}++;
361 next unless $ch_doinghost;
362 return if !length $ru;
367 for $e (@ownpasswd) {
368 next unless ref $e && $e->[$PW_USER] eq $lu;
369 hosthead("from $ch_name");
370 print ($lu eq $ru ? " $lu" : " $lu($ru)") or die $!;
371 print "<DUPLICATE>" if $displaydone{$lu}++;
376 $diagstr= "user $lu from $ch_name!$ru";
378 #print STDERR "syncuser($lu,$ru) doing\n";
381 if (!$rempasswd{$ru}) { diag("no remote entry"); return; }
382 if (length $ch_getshadow && exists $remshadow{$ru} &&
383 length $remshadow{$ru}->[$SP_DAYSDISD]) {
384 diag("remote account disabled in shadow");
388 if (!grep(ref $_ && $_->[$PW_USER] eq $lu, @ownpasswd)) {
389 if (!length $opt_createuser) { diag("account creation not enabled"); return; }
390 if ($no_act) { diag("-n specified; not creating account"); return; }
393 $useuid= $rempasswd{$ru}->[$REM_UID];
394 $usegid= $rempasswd{$ru}->[$REM_GID];
396 die "nousergroups specified, cannot create users\n" if $defaultgid==-2;
397 length $ch_uidmin or die "no uidmin specified, cannot create users\n";
398 length $ch_uidmax or die "no uidmax specified, cannot create users\n";
399 $ch_uidmin<$ch_uidmax or die "uidmin>=uidmax, cannot create users\n";
402 for $e ($defaultgid==-1 ? (@ownpasswd, @owngroup) : (@ownpasswd)) {
404 $tuid= $e->[$PW_UID]; next if $tuid<$useuid || $tuid>$ch_uidmax;
405 if ($tuid==$ch_uidmax) {
406 diag("uid (or gid?) $ch_uidmax used, cannot create users");
411 $usegid= $defaultgid==-1 ? $useuid : $defaultgid;
414 @newpwent= newentry('PW', $lu,
418 'COMMENT', $rempasswd{$ru}->[$REM_COMMENT],
419 'HOME', "$ch_homebase/$lu",
420 'SHELL', $ch_defaultshell);
422 defined($c= open CU,"-|") or die $!;
425 defined($c2= open STDIN,"-|") or die $!;
427 print STDOUT join(':',@newpwent),"\n" or die $!;
430 for ($i=0; $i<@envs_createuser; $i++) {
431 $vn= "PW_$envs_createuser[$i]";
432 #print STDERR ">$i|$vn|$$vn|$newpwent[$$vn]<\n";
433 $ENV{"SYNCUSER_CREATE_$envs_createuser[$i]"}= $newpwent[$$vn];
435 exec $opt_createuser; die "$configfile:$.: ($lu): $opt_createuser: $!\n";
438 close CU; $? and die "$configfile:$.: ($lu): $opt_createuser: code $?\n";
440 if (length $newpwent) {
441 if ($newpwent !~ m/\:/) { diag("creation script demurred"); return; }
442 @newpwent= split(/\:/,$newpwent,-1);
444 die "$opt_createuser: bad result: \`".join(':',@newpwent)."\'\n"
445 if @newpwent != $PW_fields or $newpwent[$PW_USER] ne $lu;
446 checkuid($newpwent[$PW_UID],$lu) or return;
447 if ($own_haveshadow) {
448 push @ownshadow, [ newentry('SP', $lu,
456 syncusergroup($lu,$newpwent[$PW_UID]) or return;
457 push @ownpasswd,[ @newpwent ];
461 for $e (@ownpasswd) {
462 next unless ref $e && $e->[$PW_USER] eq $lu;
463 syncusergroup($lu,$e->[$PW_UID]) or return;
466 $ruid= $rempasswd{$ru}->[$REM_UID];
467 $rgid= $rempasswd{$ru}->[$REM_GID];
468 if ($opt_sameuid && checkuid($ruid,$lu)) {
469 for $e (@ownpasswd) {
470 next unless ref $e && $e->[$PW_USER] eq $lu;
471 $luid= $e->[$PW_UID]; $lgid= $e->[$PW_GID];
472 die "$diagstr: local uid $luid, remote uid $ruid\n" if $luid ne $ruid;
473 die "$diagstr: local gid $lgid, remote gid $rgid\n" if $lgid ne $rgid;
477 #print STDERR "syncuser($lu,$ru) exists $own_haveshadow\n";
478 if ($own_haveshadow && grep(ref $_ && $_->[$PW_USER] eq $lu, @ownshadow)) {
479 #print STDERR "syncuser($lu,$ru) shadow $rempasswd{$ru}->[$REM_PW]\n";
480 copyfield('shadow',$lu,$SP_PW, $rempasswd{$ru}->[$REM_PW]);
482 #print STDERR "syncuser($lu,$ru) passwd $rempasswd{$ru}->[$REM_PW]\n";
483 copyfield('passwd',$lu,$PW_PW, $rempasswd{$ru}->[$REM_PW]);
485 copyfield('passwd',$lu,$PW_COMMENT, $rempasswd{$ru}->[$REM_COMMENT]);
487 $newsh= $rempasswd{$ru}->[$REM_SHELL];
488 $oksh= $checkedshell{$newsh};
489 if (!length $oksh) { $checkedshell{$newsh}= $oksh= (-x $newsh) ? 1 : 0; }
490 copyfield('passwd',$lu,$PW_SHELL, $newsh) if $oksh;
495 $tgroup= $e->[$GR_GROUP];
496 #print STDERR "syncuser($lu,$ru) group $tgroup\n";
497 next unless &wantsyncgroup($tgroup);
498 #print STDERR "syncuser($lu,$ru) group $tgroup yes\n";
500 if (!exists $remgroup{$tgroup}) {
501 diag("group $tgroup: not on remote host");
504 $inremote= grep($_ eq $ru, split(/\,/,$remgroup{$tgroup}->[$GR_USERS]));
505 $cusers= $e->[$GR_USERS]; $inlocal= grep($_ eq $lu, split(/\,/,$cusers));
506 if ($inremote && !$inlocal) {
507 $cusers.= ',' if length $cusers;
509 } elsif ($inlocal && !$inremote) {
510 $cusers= join(',', grep($_ ne $lu, split(/\,/, $cusers)));
514 $e->[$GR_USERS]= $cusers;
521 return if $bannerdone;
522 print "\n" or die $!; system 'date'; $? and die $?;
529 for $h (keys %wanthost) {
530 die "host $h not in config file\n" if $wanthost{$h};
534 #print STDERR "\n\nfinish display=$display pw=$pw\n\n";
535 for $e (@ownpasswd) {
538 $tuid= $e->[$PW_UID];
539 next if $displaydone{$tu};
541 #print STDERR ">$tu|$tpw<\n";
542 for $e2 (@ownshadow) {
543 next unless ref $e2 && $e2->[$SP_USER] eq $tu;
544 $tpw= $e2->[$SP_PW]; last;
546 $tpw= length($tpw)>=13 ? 1 : length($tpw) ? -1 : 0;
547 $head= ($tpw == 1 ? "unsynched" :
548 $tpw == 0 ? "unsynched, passwordless" :
549 "unsynched, no-logins").
550 ($tuid < 100 ? " system account" : " normal user");
551 $unsynch_type{$head} .= " $e->[$PW_USER]";
553 foreach $head (sort keys %unsynch_type) {
555 print $unsynch_type{$head} or die $!;
557 print "\n\n" or die $!;
562 for $file (qw(passwd shadow group)) {
563 $realfile= $file{$file,$PW_format};
564 must_eval("\$modified= \$modified$file; \$data_ref= \\\@own$file;".
565 " \$fetched= \$own_fetched$file; 1;");
567 die $file unless $fetched;
570 $newfileinst= "/etc/$realfile";
571 $newfile= "$realfile.new";
573 $newfileinst= $savebackto{$file};
574 $newfile= "$newfileinst.new";
576 open NF,"> $newfile" or die "$newfile: $!";
577 for $e (@$data_ref) {
578 $record= ref $e ? join(':',@$e) : $e;
579 print NF $record,"\n" or die $!;
582 system 'diff','-U0','--label',$realfile,$newfileinst,
583 '--label',"$realfile.new",$newfile;
586 (@stats= stat $newfileinst) or die "$file: $!";
587 chown $stats[4],$stats[5], $newfile or die $!;
588 chmod $stats[2] & 07777, $newfile or die $!;
589 rename $newfile, $newfileinst or die $!;
598 next if m/^\#/ || !m/\S/;
599 finish() if m/^end$/;
600 if (m/^host\s+(\S+)$/) {
602 $ch_getpasswd= $ch_getgroup= $ch_getshadow= '';
603 $ch_fetchedpasswd= $ch_fetchedgroup;
606 } elsif (exists $wanthost{$ch_name}) {
607 $wanthost{$ch_name}= 0;
612 fields_fmt('REM','std');
613 } elsif (m/^(getpasswd|getshadow|getgroup)\s+(.*\S)$/) {
614 must_eval("\$ch_$1= \$2; 1;");
615 } elsif (m/^(local|remote)format\s+(\w+)$/) {
616 fields_fmt($1 eq 'local' ? 'PW' :
617 $1 eq 'remote' ? 'REM' : die,
619 } elsif (m/^lock(passwd|group)\s+(runvia|link)\s+(\S+)$/) {
620 must_eval("\$ch_lock_$1= \$3; \$ch_lockstyle_$1= \$2; 1;");
621 } elsif (m/^lock(passwd|group)\s+(none)$/) {
622 must_eval("\$ch_lockstyle_$1= \$2; 1;");
623 } elsif (m,^(homebase|defaultshell)\s+(/\S+)$,) {
624 must_eval("\$ch_$1= \$2; 1;");
625 } elsif (m/^(uidmin|uidmax)\s+(\d+)$/ && $2>0) {
626 must_eval("\$ch_$1= \$2; 1;");
627 } elsif (m/^createuser$/) {
628 $opt_createuser= $def_createuser;
629 } elsif (m/^nocreateuser$/) {
631 } elsif (m/^createuser\s+(\S+)$/) {
633 } elsif (m/^logfile\s+(.*\S)$/) {
635 open STDOUT,">> $1" or die "$1: $!"; $|=1;
636 $!=0; system 'date'; $? and die "date: $! $?\n";
637 } elsif (!$display) {
638 print "would log to $1\n" or die $!;
640 } elsif (m/^(no|)(sameuid)$/) {
641 must_eval("\$opt_$2= ".($1 eq 'no' ? 0 : 1)."; 1;");
642 } elsif (m/^usergroups$/) {
644 } elsif (m/^nousergroups$/) {
646 } elsif (m/^defaultgid\s+(\d+)$/) {
648 } elsif (m/^(no|)group\s+([-+.0-9a-zA-Z*?]+)$/) {
649 $yes= $1 eq 'no' ? 0 : 1;
651 @groupglobs=() if $_ eq '*';
655 unshift @groupglobs, [ $_, $yes ];
657 } elsif (m/^user\s+(\S+)$/) {
659 } elsif (m/^user\s+(\S+)\s+remote\=(\S+)$/) {
661 } elsif (m/^nouser\s+(\S+)$/) {
663 } elsif (m/^users\s+(\d+)\-(\d+)$/) {
664 $tmin= $1; $tmax= $2; $except= $3;
666 for $k (keys %rempasswd) {
667 $tuid= $rempasswd{$k}->[2];
668 next if $tuid<$1 or $tuid>$2;
671 } elsif (m/^addhere$/) {
673 die "$configfile:$.: unknown directive\n";
677 die "$configfile:$.: missing \`end', or read error\n";