nsswrapper: implement group_add() in nss_wrapper.pl.

[ira/wip.git] / lib / nss_wrapper / nss_wrapper.pl

diff --git a/lib/nss_wrapper/nss_wrapper.pl b/lib/nss_wrapper/nss_wrapper.pl
index dbb7f85dc47c38e0cd28603291bb829aa218fd1f..88fdc7bca607c33c74e03a54ab28086d4d97846f 100644 (file)
--- a/lib/nss_wrapper/nss_wrapper.pl
+++ b/lib/nss_wrapper/nss_wrapper.pl
@@ -41,9 +41,8 @@ sub usage($;$)
 
        --path <path>           Path of the 'passwd' or 'group' file.
 
-       --type <type>           Only 'passwd' is supported yet,
-                               but 'group' and maybe 'member' will be added
-                               in future.
+       --type <type>           Only 'passwd' and 'group' are supported yet,
+                               maybe 'member' will be added in future.
 
        --action <action>       'add' or 'delete'.
 
@@ -125,6 +124,30 @@ sub passwd_load($)
        return $passwd;
 }
 
+sub group_add_entry($$);
+
+sub group_load($)
+{
+       my ($path) = @_;
+       my @lines;
+       my $group = undef;
+
+       open(GROUP, "<$path") or die("Unable to open '$path' for read");
+       @lines = <GROUP>;
+       close(GROUP);
+
+       $group->{array} = ();
+       $group->{name} = {};
+       $group->{gid} = {};
+       $group->{path} = $path;
+
+       foreach my $line (@lines) {
+               group_add_entry($group, $line);
+       }
+
+       return $group;
+}
+
 sub passwd_lookup_name($$)
 {
        my ($passwd, $name) = @_;
@@ -134,6 +157,15 @@ sub passwd_lookup_name($$)
        return $passwd->{name}{$name};
 }
 
+sub group_lookup_name($$)
+{
+       my ($group, $name) = @_;
+
+       return undef unless defined($group->{name}{$name});
+
+       return $group->{name}{$name};
+}
+
 sub passwd_lookup_uid($$)
 {
        my ($passwd, $uid) = @_;
@@ -143,6 +175,15 @@ sub passwd_lookup_uid($$)
        return $passwd->{uid}{$uid};
 }
 
+sub group_lookup_gid($$)
+{
+       my ($group, $gid) = @_;
+
+       return undef unless defined($group->{gid}{$gid});
+
+       return $group->{gid}{$gid};
+}
+
 sub passwd_get_free_uid($)
 {
        my ($passwd) = @_;
@@ -155,6 +196,18 @@ sub passwd_get_free_uid($)
        return $uid;
 }
 
+sub group_get_free_gid($)
+{
+       my ($group) = @_;
+       my $gid = 1000;
+
+       while (group_lookup_gid($group, $gid)) {
+               $gid++;
+       }
+
+       return $gid;
+}
+
 sub passwd_add_entry($$)
 {
        my ($passwd, $str) = @_;
@@ -167,6 +220,18 @@ sub passwd_add_entry($$)
        $passwd->{uid}{$e[2]} = \@e;
 }
 
+sub group_add_entry($$)
+{
+       my ($group, $str) = @_;
+
+       chomp $str;
+       my @e = split(':', $str);
+
+       push(@{$group->{array}}, \@e);
+       $group->{name}{$e[0]} = \@e;
+       $group->{gid}{$e[2]} = \@e;
+}
+
 sub passwd_remove_entry($$)
 {
        my ($passwd, $eref) = @_;
@@ -201,6 +266,29 @@ sub passwd_save($)
        rename($tmppath, $path) or die("Unable to rename $tmppath => $path");
 }
 
+sub group_save($)
+{
+       my ($group) = @_;
+       my @lines = ();
+       my $path = $group->{path};
+       my $tmppath = $path.$$;
+
+       foreach my $eref (@{$group->{array}}) {
+               next unless defined($eref);
+
+               my $line = join(':', @{$eref});
+               if (scalar(@{$eref}) == 3) {
+                       $line .= ":";
+               }
+               push(@lines, $line);
+       }
+
+       open(GROUP, ">$tmppath") or die("Unable to open '$tmppath' for write");
+       print GROUP join("\n", @lines)."\n";
+       close(GROUP);
+       rename($tmppath, $path) or die("Unable to rename $tmppath => $path");
+}
+
 sub passwd_add($$)
 {
        my ($path, $name) = @_;
@@ -248,7 +336,20 @@ sub group_add($$)
 
        #print "group_add: '$name' in '$path'\n";
 
-       die("group_add: not implemented yet!");
+       my $group = group_load($path);
+
+       my $e = group_lookup_name($group, $name);
+       die("group[$name] already exists in '$path'") if defined($e);
+
+       my $gid = group_get_free_gid($group);
+
+       my $gwent = $name.":x:".$gid.":".""; #no members yet
+
+       group_add_entry($group, $gwent);
+
+       group_save($group);
+
+       #printf("%d\n", $gid);
 
        return 0;
 }