Allow instance name to be parsed from start-slapd

The admin server CGIs need to be able to easily parse the
instance name from the start-slapd script.  Recent format
changes have caused the existing parsing to break, so this
patch makes the parsing of the instance name easier.

To deal with the change in start-slapd format for an upgraded
instance, I have changed the setup code to regenerate all of
the instance scripts during an upgrade instead of simply adding
missing scripts.  This is needed for any bug fix that modifies
a script template to work for an upgraded instance.  I also
added code to write the instance sysconfig script during upgrade
if it doesn't exist already.  We don't want to overwrite this
file if it already exists since it's designed for local changes
to be made to it.

ldap/admin/src/scripts/DSCreate.pm.in

@@ -64,8 +64,8 @@ use Mozilla::LDAP::LDIF;
 
 use Exporter;
 @ISA       = qw(Exporter);
-@EXPORT    = qw(createDSInstance removeDSInstance setDefaults createInstanceScripts installSchema);
-@EXPORT_OK = qw(createDSInstance removeDSInstance setDefaults createInstanceScripts installSchema);
+@EXPORT    = qw(createDSInstance removeDSInstance setDefaults createInstanceScripts makeOtherConfigFiles installSchema);
+@EXPORT_OK = qw(createDSInstance removeDSInstance setDefaults createInstanceScripts makeOtherConfigFiles installSchema);
 
 use strict;
 
@@ -436,6 +436,7 @@ sub createConfigFile {
 
 sub makeOtherConfigFiles {
     my $inf = shift;
+    my $skip = shift;
     my @errs;
     my %maptable = (
         "DS-ROOT" => $inf->{General}->{prefix},
@@ -461,13 +462,18 @@ sub makeOtherConfigFiles {
 
     $src = "$inf->{General}->{prefix}@configdir@/slapd-collations.conf";
     $dest = "$inf->{slapd}->{config_dir}/slapd-collations.conf";
+
     $! = 0; # clear errno
-    copy($src, $dest);
-    if ($!) {
-        return ('error_copying_file', $src, $dest, $!);
-    }
-    if (@errs = changeOwnerMode($inf, 4, $dest)) {
-        return @errs;
+
+    #in skip mode, skip files that already exist
+    unless ($skip and -f $dest) {
+        copy($src, $dest);
+        if ($!) {
+            return ('error_copying_file', $src, $dest, $!);
+        }
+        if (@errs = changeOwnerMode($inf, 4, $dest)) {
+            return @errs;
+        }
     }
 
     # determine initconfig_dir
@@ -487,22 +493,25 @@ sub makeOtherConfigFiles {
 
     $! = 0; # clear errno
 
-    if (!open(SRC, "< $src")) {
-        return ("error_opening_scripttmpl", $src, $!);
-    }
-    if (!open(DEST, "> $dest")) {
-        return ("error_opening_scripttmpl", $dest, $!);
-    }
-    my $contents; # slurp entire file into memory
-    read SRC, $contents, int(-s $src);
-    close(SRC);
-    while (my ($key, $val) = each %maptable) {
-        $contents =~ s/\{\{$key\}\}/$val/g;
-    }
-    print DEST $contents;
-    close(DEST);
-    if (@errs = changeOwnerMode($inf, 4, $dest)) {
-        return @errs;
+    # in skip mode, skip files that already exist
+    unless ($skip and -f $dest) {
+        if (!open(SRC, "< $src")) {
+            return ("error_opening_scripttmpl", $src, $!);
+        }
+        if (!open(DEST, "> $dest")) {
+            return ("error_opening_scripttmpl", $dest, $!);
+        }
+        my $contents; # slurp entire file into memory
+        read SRC, $contents, int(-s $src);
+        close(SRC);
+        while (my ($key, $val) = each %maptable) {
+            $contents =~ s/\{\{$key\}\}/$val/g;
+        }
+        print DEST $contents;
+        close(DEST);
+        if (@errs = changeOwnerMode($inf, 4, $dest)) {
+            return @errs;
+        }
     }
 
     return ();

ldap/admin/src/scripts/DSUpdate.pm.in

@@ -47,7 +47,7 @@ package DSUpdate;
 use DSUtil;
 use Inf;
 use FileConn;
-use DSCreate qw(setDefaults createInstanceScripts);
+use DSCreate qw(setDefaults createInstanceScripts makeOtherConfigFiles);
 
 use File::Basename qw(basename dirname);
 
@@ -315,7 +315,12 @@ sub updateDSInstance {
     }
 
     # upgrade instance scripts
-    if (@errs = createInstanceScripts($inf, 1)) {
+    if (@errs = createInstanceScripts($inf, 0)) {
+        return @errs;
+    }
+
+    # add new or missing config files
+    if (@errs = makeOtherConfigFiles($inf, 1)) {
         return @errs;
     }
 

ldap/admin/src/scripts/template-start-slapd.in

@@ -5,6 +5,7 @@
 #       0: Server started successfully
 #       1: Server could not be started
 #       2: Server already running
+INSTANCE={{SERV-ID}}
 
-@sbindir@/start-dirsrv -d {{INITCONFIG-DIR}} {{SERV-ID}} "$@"
+@sbindir@/start-dirsrv -d {{INITCONFIG-DIR}} $INSTANCE "$@"
 exit $?