+#!/usr/bin/env perl
+#
+# Convert users.v2 or .v3 to JSON .v4 format
+#
+# It is believed that this can be run at any time...
+#
+# Copyright (c) 2020 Dirk Koopman G1TLH
+#
+#
+#
+
+# make sure that modules are searched in the order local then perl
+
+BEGIN {
+ # root of directory tree for this system
+ $root = "/spider";
+ $root = $ENV{'DXSPIDER_ROOT'} if $ENV{'DXSPIDER_ROOT'};
+ unshift @INC, "$root/perl"; # this IS the right way round!
+ unshift @INC, "$root/local";
+}
+
+use strict;
+
+use SysVar;
+use DXUser;
+use DXUtil;
+use JSON;
+use Data::Structure::Util qw(unbless);
+use Time::HiRes qw(gettimeofday tv_interval);
+use IO::File;
+use File::Copy;
+use Carp;
+use DB_File;
+
+use 5.10.1;
+
+my $ufn;
+my $fn = "users";
+
+my $json = JSON->new()->canonical(1);
+my $ofn = localdata("$fn.v4");
+my $convert;
+
+eval {
+ require Storable;
+};
+
+if ($@) {
+ if ( ! -e localdata("$fn.v3") && -e localdata("$fn.v2") ) {
+ $convert = 2;
+ }
+ LogDbg('',"the module Storable appears to be missing!!");
+ LogDbg('',"trying to continue in compatibility mode (this may fail)");
+ LogDbg('',"please install Storable from CPAN as soon as possible");
+}
+else {
+ import Storable qw(nfreeze thaw);
+ $convert = 3 if -e localdata("users.v3") && !-e $ufn;
+}
+
+die "need to have a $fn.v2 or (preferably) a $fn.v3 file in /spider/data or /spider/local_data\n" unless $convert;
+
+if (-e $ofn || -e "$ofn.n") {
+ my $nfn = localdata("$fn.v4.json");
+ say "You appear to have (or are using) $ofn, creating $nfn instead";
+ $ofn = $nfn;
+} else {
+ $ofn = "$ofn.n";
+ say "using $ofn.n for output";
+}
+
+
+# do a conversion if required
+if ($convert) {
+ my ($key, $val, $action, $count, $err) = ('','',0,0,0);
+ my $ta = [gettimeofday];
+ my $ofh = IO::File->new(">$ofn") or die "cannot open $ofn ($!)\n";
+
+ my %oldu;
+ LogDbg('',"Converting the User File from V$convert to $fn.v4 ");
+ LogDbg('',"This will take a while, maybe as much as 10 secs");
+ my $odbm = tie (%oldu, 'DB_File', localdata("users.v$convert"), O_RDONLY, 0666, $DB_BTREE) or confess "can't open user file: $fn.v$convert ($!) [rebuild it from user_asc?]";
+ for ($action = R_FIRST; !$odbm->seq($key, $val, $action); $action = R_NEXT) {
+ my $ref;
+ if ($convert == 3) {
+ eval { $ref = storable_decode($val) };
+ }
+ else {
+ eval { $ref = asc_decode($val) };
+ }
+ unless ($@) {
+ if ($ref) {
+ unbless $ref;
+ $ofh->print("$ref->{call}\t" . $json->encode($ref) . "\n");
+ $count++;
+ }
+ else {
+ $err++
+ }
+ }
+ else {
+ Log('err', "DXUser: error decoding $@");
+ }
+ }
+ undef $odbm;
+ untie %oldu;
+ my $t = _diffms($ta);
+ LogDbg('',"Conversion from users.v$convert to $ofn completed $count records $err errors $t mS");
+ $ofh->close;
+}
+
+exit 0;
+
+sub asc_decode
+{
+ my $s = shift;
+ my $ref;
+ $s =~ s/\%([0-9A-F][0-9A-F])/chr(hex($1))/eg;
+ eval '$ref = ' . $s;
+ if ($@) {
+ LogDbg('err', "DXUser::asc_decode: on '$s' $@");
+ $ref = undef;
+ }
+ return $ref;
+}
+
+sub storable_decode
+{
+ my $ref;
+ $ref = thaw(shift);
+ return $ref;
+}
+
+sub LogDbg
+{
+ my (undef, $s) = @_;
+ say $s;
+}
+
+sub Log
+{
+ say shift;
+}