#
# DX cluster user routines
#
-# Copyright (c) 1998 - Dirk Koopman G1TLH
+# Copyright (c) 1998-2020 - Dirk Koopman G1TLH
#
-# $Id$
+# The new internal structure of the users system looks like this:
+#
+# The users.v4 file formatted as a file of lines containing: <callsign>\t{json serialised version of user record}\n
+#
+# You can look at it with any text tools or your favourite editor :-)
+#
+# In terms of internal structure, the main user hash remains as %u, keyed on callsign as before.
+#
+# The value is a one or two element array [position] or [position, ref], depending on whether the record has been "get()ed"
+# [i.e. got from disk] or not. The 'position' is simply the start of each line in the file. The function "get()" simply returns
+# the stored reference in array[1], if present, or seeks to the position from array[0], reads a line, json_decodes it,
+# stores that reference into array[1] and returns that. That reference will be used from that time onwards.
+#
+# The routine writeoutjson() will (very) lazily write out a copy of %u WITHOUT STORING ANY EXTRA CURRENTLY UNREFERENCED CALLSIGN
+# records to users.v4.n. It, in effect, does a sort of random accessed merge of the current user file and any "in memory"
+# versions of any user record. This can be done with a spawned command because it will just be reading %u and merging
+# loaded records, not altering the current users.v4 file in any way.
+#
+# %u -> $u{call} -> [position of json line in users.v4 (, reference -> {call=>'G1TLH', ...} if this record is in use)].
+#
+# On my machine, it takes about 250mS to read the entire users.v4 file of 190,000 records and to create a
+# $u{callsign}->[record position in users.v4] for every callsign in the users.v4 file. Loading ~19,000 records
+# (read from disk, decode json, store reference) takes about 110mS (or 580nS/record).
+#
+# A periodic dump of users.v4.n, with said ~19,000 records in memory takes about 750mS to write (this can be speeded up,
+# by at least a half, if it becomes a problem!). As this periodic dump will be spawned off, it will not interrupt the data
+# stream.
+#
+# This is the first rewrite of DXUsers since inception. In the mojo branch we will no longer use Storable but use JSON instead.
+# We will now be storing all the keys in memory and will use opportunistic loading of actual records in "get()". So out of
+# say 200,000 known users it is unlikely that we will have more than 10% (more likely less) of the user records in memory.
+# This will mean that there will be a increase in memory requirement, but it is modest. I estimate it's unlikely be more
+# than 30 or so MB.
+#
+# At the moment that means that the working users.v4 is "immutable".
+#
+# In normal operation, when first calling 'init()', the keys and positions will be read from the newer of users.v4.n and
+# users.v4. If there is no users.v4.n, then users.v4 will be used. As time wears on, %u will then accrete active user records.
+# Once an hour the current %u will be saved to users.v4.n.
+#
+# If it becomes too much of a problem then we are likely to chuck off "close()d" users onto the end of the current users.v4
+# leaving existing users intact, but updating the pointer to the (now cleared out) user ref to the new location. This will
+# be a sort of write behind log file. The users.v4 file is still immutable for the starting positions, but any chucked off
+# records (or even "updates") will be written to the end of that file. If this has to be reread at any time, then the last
+# entry for any callsign "wins". But this will only happen if I think the memory requirements over time become too much.
+#
+# As there is no functional difference between the users.v4 and export_user generated "user_json" file(s), other than the latter
+# will be in sorted order with the record elements in "canonical" order. There will now longer be any code to execute to
+# "restore the users file". Simply copy one of the "user_json" files to users.v4, remove users.v4.n and restart.
+#
+# Hopefully though, this will put to rest the need to do all that messing about ever again... Pigs may well be seen flying over
+# your node as well :-)
#
package DXUser;
-require Exporter;
-@ISA = qw(Exporter);
-
-use MLDBM qw(DB_File);
+use DXLog;
+use DB_File;
+use Data::Dumper;
use Fcntl;
-use Carp;
+use IO::File;
+use DXUtil;
+use LRU;
+use File::Copy;
+use JSON;
+use DXDebug;
+use Data::Structure::Util qw(unbless);
+use Time::HiRes qw(gettimeofday tv_interval);
+use IO::File;
use strict;
-use vars qw(%u $dbm $filename %valid);
+
+use vars qw(%u $filename %valid $lastoperinterval $lasttime $lru $lrusize $tooold $v3 $v4);
%u = ();
-$dbm = undef;
$filename = undef;
+$lastoperinterval = 60*24*60*60;
+$lasttime = 0;
+$lrusize = 2000;
+$tooold = 86400 * 365 + 31; # this marks an old user who hasn't given enough info to be useful
+$v3 = 0;
+$v4 = 0;
+my $json;
+
+our $maxconnlist = 3; # remember this many connection time (duration) [start, end] pairs
+
+our $newusers = 0; # per execution stats
+our $modusers = 0;
+our $totusers = 0;
+our $delusers = 0;
+our $cachedusers = 0;
+
+my $ifh; # the input file, initialised by readinjson()
+
# hash of valid elements and a simple prompt
%valid = (
lat => '0,Latitude,slat',
long => '0,Longitude,slong',
qra => '0,Locator',
- email => '0,E-mail Address',
+ email => '0,E-mail Address,parray',
priv => '9,Privilege Level',
lastin => '0,Last Time in,cldatetime',
- passwd => '9,Password',
+ passwd => '9,Password,yesno',
+ passphrase => '9,Pass Phrase,yesno',
addr => '0,Full Address',
'sort' => '0,Type of User', # A - ak1a, U - User, S - spider cluster, B - BBS
xpert => '0,Expert Status,yesno',
node => '0,Last Node',
homenode => '0,Home Node',
lockout => '9,Locked out?,yesno', # won't let them in at all
- dxok => '9,DX Spots?,yesno', # accept his dx spots?
- annok => '9,Announces?,yesno', # accept his announces?
- reg => '0,Registered?,yesno', # is this user registered?
+ dxok => '9,Accept DX Spots?,yesno', # accept his dx spots?
+ annok => '9,Accept Announces?,yesno', # accept his announces?
lang => '0,Language',
hmsgno => '0,Highest Msgno',
- group => '0,Access Group,parray', # used to create a group of users/nodes for some purpose or other
+ group => '0,Group,parray', # used to create a group of users/nodes for some purpose or other
+ buddies => '0,Buddies,parray',
isolate => '9,Isolate network,yesno',
+ wantbeep => '0,Req Beep,yesno',
+ wantann => '0,Req Announce,yesno',
+ wantwwv => '0,Req WWV,yesno',
+ wantwcy => '0,Req WCY,yesno',
+ wantecho => '0,Req Echo,yesno',
+ wanttalk => '0,Req Talk,yesno',
+ wantwx => '0,Req WX,yesno',
+ wantdx => '0,Req DX Spots,yesno',
+ wantemail => '0,Req Msgs as Email,yesno',
+ pagelth => '0,Current Pagelth',
+ pingint => '9,Node Ping interval',
+ nopings => '9,Ping Obs Count',
+ wantlogininfo => '0,Login Info Req,yesno',
+ wantgrid => '0,Show DX Grid,yesno',
+ wantann_talk => '0,Talklike Anns,yesno',
+ wantpc16 => '9,Want Users from node,yesno',
+ wantsendpc16 => '9,Send PC16,yesno',
+ wantroutepc19 => '9,Route PC19,yesno',
+ wantusstate => '0,Show US State,yesno',
+ wantdxcq => '0,Show CQ Zone,yesno',
+ wantdxitu => '0,Show ITU Zone,yesno',
+ wantgtk => '0,Want GTK interface,yesno',
+ wantpc9x => '0,Want PC9X interface,yesno',
+ wantrbn => '0,Want RBN spots,yesno',
+ wantft => '0,Want RBN FT4/8,yesno',
+ wantcw => '0,Want RBN CW,yesno',
+ wantrtty => '0,Want RBN RTTY,yesno',
+ wantpsk => '0,Want RBN PSK,yesno',
+ wantbeacon => '0,Want (RBN) Beacon,yesno',
+ lastoper => '9,Last for/oper,cldatetime',
+ nothere => '0,Not Here Text',
+ registered => '9,Registered?,yesno',
+ prompt => '0,Required Prompt',
+ version => '1,Version',
+ build => '1,Build',
+ believe => '1,Believable nodes,parray',
+ lastping => '1,Last Ping at,ptimelist',
+ maxconnect => '1,Max Connections',
+ startt => '0,Start Time,cldatetime',
+ connlist => '1,Connections,parraydifft',
);
-no strict;
+#no strict;
sub AUTOLOAD
{
- my $self = shift;
+ no strict;
my $name = $AUTOLOAD;
return if $name =~ /::DESTROY$/;
- $name =~ s/.*:://o;
+ $name =~ s/^.*:://o;
confess "Non-existant field '$AUTOLOAD'" if !$valid{$name};
- if (@_) {
- $self->{$name} = shift;
- # $self->put();
- }
- return $self->{$name};
+ # this clever line of code creates a subroutine which takes over from autoload
+ # from OO Perl - Conway
+ *$AUTOLOAD = sub {@_ > 1 ? $_[0]->{$name} = $_[1] : $_[0]->{$name}};
+ goto &$AUTOLOAD;
}
+#use strict;
+
#
# initialise the system
#
sub init
{
- my ($pkg, $fn, $mode) = @_;
+ my $mode = shift;
- confess "need a filename in User" if !$fn;
- if ($mode) {
- $dbm = tie (%u, MLDBM, $fn, O_CREAT|O_RDWR, 0666) or confess "can't open user file: $fn ($!)";
+ my $convert = "$main::root/perl/convert-users-v3-to-v4.pl";
+ my $export;
+
+ $json = JSON->new()->canonical(1);
+ $filename = localdata("users.v4");
+
+ if (-e $filename || -e "$filename.n" || -e "$filename.o") {
+ $v4 = 1;
} else {
- $dbm = tie (%u, MLDBM, $fn, O_RDONLY) or confess "can't open user file: $fn ($!)";
+# if (-e localdata('users.v3')) {
+# LogDbg('DXUser', "Converting " . localdata('users.v3') . " to new json version of users file, please wait");
+# if (-x $convert) {
+# system($convert);
+# ++$export;
+# }
+# }
+
+ die "User file $filename missing, please run $convert or copy a user_json backup from somewhere\n" unless -e "$filename.n" || -s $filename;
}
-
- $filename = $fn;
+ readinjson();
+ copy $filename, "$filename.n" unless -e "$filename.n";
+ export() if $export;
}
-use strict;
+sub del_file
+{
+ # with extreme prejudice
+ unlink "$main::data/users.v4";
+ unlink "$main::local_data/users.v4";
+}
+
+#
+# periodic processing
+#
+sub process
+{
+# if ($main::systime > $lasttime + 15) {
+# #$dbm->sync if $dbm;
+# $lasttime = $main::systime;
+# }
+}
#
# close the system
sub finish
{
- $dbm = undef;
- untie %u;
+
+ writeoutjson();
}
#
# new - create a new user
#
-sub new
+sub alloc
{
my $pkg = shift;
my $call = uc shift;
+ my $self = bless {call => $call, 'sort'=>'U'}, $pkg;
+ return $self;
+}
+
+sub new
+{
+ my $pkg = shift;
+ my $call = shift;
# $call =~ s/-\d+$//o;
confess "can't create existing call $call in User\n!" if $u{$call};
- my $self = bless {}, $pkg;
- $self->{call} = $call;
- $self->{'sort'} = 'U';
- $self->{dxok} = 1;
- $self->{annok} = 1;
- $self->{lang} = $main::lang;
- $u{call} = $self;
+ my $self = $pkg->alloc($call);
+ $u{$call} = [0, $self];
+ $self->put;
+ ++$newusers;
+ ++$totusers;
return $self;
}
sub get
{
- my $pkg = shift;
my $call = uc shift;
- # $call =~ s/-\d+$//o; # strip ssid
- return $u{$call};
+ my $nodecode = shift;
+ my $ref = $u{$call};
+ return undef unless $ref;
+
+ unless ($ref->[1]) {
+ $ifh->seek($ref->[0], 0);
+ my $l = $ifh->getline;
+ if ($l) {
+ my ($k,$s) = split /\t/, $l;
+ return $s if $nodecode;
+ my $j = json_decode($s);
+ if ($j) {
+ $ref->[1] = $j;
+ ++$cachedusers;
+ }
+ }
+ } elsif ($nodecode) {
+ return json_encode($ref->[1]);
+ }
+ return $ref->[1];
}
#
-# get all callsigns in the database
+# get an "ephemeral" reference - i.e. this will give you new temporary copy of
+# the call's user record, but without storing it (if it isn't already there)
+#
+# This is not as quick as get()! But it will allow safe querying of the
+# user file. Probably in conjunction with get_some_calls feeding it.
+#
+# NOTE: for cached records this, in effect, is a faster version of Storable's
+# dclone - only about 3.5 times as fast!
#
-sub get_all_calls
+sub get_tmp
{
- return (sort keys %u);
+ my $call = uc shift;
+ my $ref = $u{$call};
+ if ($ref) {
+ if ($ref->[1]) {
+ return json_decode(json_encode($ref->[1]));
+ }
+ $ifh->seek($ref->[0], 0);
+ my $l = $ifh->getline;
+ if ($l) {
+ my ($k,$s) = split /\t/, $l;
+ my $j = json_decode($s);
+ return $j;
+ }
+ }
+ return undef;
}
#
-# get an existing either from the channel (if there is one) or from the database
+# Master branch:
+# get an existing record either from the channel (if there is one) or from the database
#
# It is important to note that if you have done a get (for the channel say) and you
# want access or modify that you must use this call (and you must NOT use get's all
# over the place willy nilly!)
#
+# NOTE: mojo branch with newusers system:
+# There is no longer any function difference between get_current()
+# and get() as they will always reference the same record as held in %u. This is because
+# there is no more (repeated) thawing of stored records from the underlying "database".
+#
+# BUT: notice the difference between this and the get_tmp() function. A get() will online an
+# othewise unused record, so for poking around looking for that locked out user:
+# MAKE SURE you use get_tmp(). It will likely still be quicker than DB_File and Storable!
+#
sub get_current
{
- my $pkg = shift;
- my $call = uc shift;
- # $call =~ s/-\d+$//o; # strip ssid
-
- my $dxchan = DXChannel->get($call);
- return $dxchan->user if $dxchan;
- return $u{$call};
+ goto &get;
+
+# my $call = uc shift;
+#
+# my $dxchan = DXChannel::get($call);
+# if ($dxchan) {
+# my $ref = $dxchan->user;
+# return $ref if $ref && UNIVERSAL::isa($ref, 'DXUser');
+#
+# dbg("DXUser::get_current: got invalid user ref for $call from dxchan $dxchan->{call} ". ref $ref. " ignoring");
+# }
+# return get($call);
+}
+
+#
+# get all callsigns in the database
+#
+
+sub get_all_calls
+{
+ return (sort keys %u);
+}
+
+#
+# get some calls - provide a qr// style selector string as a partial key
+#
+
+sub get_some_calls
+{
+ my $pattern = shift || qr/.*/;
+ return sort grep {$pattern} keys %u;
+}
+
+#
+# if I understand the term correctly, this is a sort of monad.
+#
+# Scan through the whole user file and select records that you want
+# to process further. This routine returns lines of json, yu
+#
+# the CODE ref should look like:
+# sub {
+# my $key = shift;
+# my $line = shift;
+# # maybe do a rough check to see if this is a likely candidate
+# return unless $line =~ /something/;
+# my $r = json_decode($l);
+# return (condition ? wanted thing : ());
+# }
+#
+
+sub scan
+{
+ my $c = shift;
+ my @out;
+
+ if (ref($c) eq 'CODE') {
+ foreach my $k (get_all_calls()) {
+ my $l = get($k, 1); # get the offline json line or the jsoned online version
+ push @out, $c->($k, $l) if $l;
+ }
+ } else {
+ dbg("DXUser::scan supplied argument is not a code ref");
+ }
+ return @out;
}
#
sub put
{
my $self = shift;
- my $call = $self->{call};
- $u{$call} = $self;
+ confess "Trying to put nothing!" unless $self && ref $self;
+ $self->{lastin} = $main::systime;
+ ++$modusers; # new or existing, it's still been modified
}
+# freeze the user
+sub encode
+{
+ goto &json_encode;
+}
+
+# thaw the user
+sub decode
+{
+ goto &json_decode;
+}
+
+sub json_decode
+{
+ my $s = shift;
+ my $ref;
+ eval { $ref = $json->decode($s) };
+ if ($ref && !$@) {
+ return bless $ref, 'DXUser';
+ } else {
+ LogDbg('DXUser', "DXUser::json_decode: on '$s' $@");
+ }
+ return undef;
+}
+
+sub json_encode
+{
+ my $ref = shift;
+ unbless($ref);
+ my $s = $json->encode($ref);
+ bless $ref, 'DXUser';
+ return $s;
+}
+
#
# del - delete a user
#
{
my $self = shift;
my $call = $self->{call};
+ ++$delusers;
+ --$totusers;
+ --$cachedusers if $u{$call}->[1];
delete $u{$call};
}
sub close
{
my $self = shift;
- $self->{lastin} = time;
- $self->put();
+ my $startt = shift;
+ my $ip = shift;
+ $self->{lastin} = $main::systime;
+ # add a record to the connect list
+ my $ref = [$startt || $self->{startt}, $main::systime];
+ push @$ref, $ip if $ip;
+ push @{$self->{connlist}}, $ref;
+ shift @{$self->{connlist}} if @{$self->{connlist}} > $maxconnlist;
+}
+
+#
+# sync the database
+#
+
+sub sync
+{
+# $dbm->sync;
}
#
return keys(%valid);
}
+
+#
+# export the database to an ascii file
+#
+
+sub export
+{
+ my $name = shift;
+
+ my $fn = $name || localdata("user_json"); # force use of local_data
+ my $ta = [gettimeofday];
+
+ # save old ones
+ move "$fn.oooo", "$fn.ooooo" if -e "$fn.oooo";
+ move "$fn.ooo", "$fn.oooo" if -e "$fn.ooo";
+ move "$fn.oo", "$fn.ooo" if -e "$fn.oo";
+ move "$fn.o", "$fn.oo" if -e "$fn.o";
+ move "$fn", "$fn.o" if -e "$fn";
+
+ my $json = JSON->new;
+ $json->canonical(1);;
+
+ my $count = 0;
+ my $err = 0;
+ my $del = 0;
+ my $fh = new IO::File ">$fn" or return "cannot open $fn ($!)";
+ if ($fh) {
+ my $key = 0;
+ my $val = undef;
+ foreach my $k (sort keys %u) {
+ my $r = get($k);
+ if ($r->{sort} eq 'U' && !$r->{priv} && $main::systime > $r->{lastin}+$tooold ) {
+ unless ($r->{lat} || $r->{long} || $r->{qra} || $r->{qth} || $r->{name}) {
+ LogDbg('export', "DXUser::export deleting $k - too old, last in " . cldatetime($r->lastin) . " " . difft([$r->lastin, $main::systime]));
+ delete $u{$k};
+ ++$del;
+ next;
+ }
+ }
+ eval {$val = json_encode($r);};
+ if ($@) {
+ LogDbg('export', "DXUser::export error encoding call: $k $@");
+ ++$err;
+ next;
+ }
+ $fh->print("$k\t$val\n");
+ ++$count;
+ }
+ $fh->close;
+ }
+ my $t = _diffms($ta);
+ my $s = qq{Exported users to $fn - $count Users $del Deleted $err Errors in $t mS ('sh/log Export' for details)};
+ LogDbg('DXUser', $s);
+ return $s;
+}
+
#
# group handling
#
$self->{group} = [ 'local' ];
}
+# set up empty buddies (only happens for them's that connect direct)
+sub new_buddies
+{
+ my $self = shift;
+ $self->{buddies} = [ ];
+}
+
#
# return a prompt for a field
#
my $self = shift;
@_ ? $self->{'sort'} = shift : $self->{'sort'} ;
}
+
+# some accessors
+
+# want is default = 1
+sub _want
+{
+ my $n = shift;
+ my $self = shift;
+ my $val = shift;
+ my $s = "want$n";
+ $self->{$s} = $val if defined $val;
+ return exists $self->{$s} ? $self->{$s} : 1;
+}
+
+# wantnot is default = 0
+sub _wantnot
+{
+ my $n = shift;
+ my $self = shift;
+ my $val = shift;
+ my $s = "want$n";
+ $self->{$s} = $val if defined $val;
+ return exists $self->{$s} ? $self->{$s} : 0;
+}
+
+sub wantbeep
+{
+ return _want('beep', @_);
+}
+
+sub wantann
+{
+ return _want('ann', @_);
+}
+
+sub wantwwv
+{
+ return _want('wwv', @_);
+}
+
+sub wantwcy
+{
+ return _want('wcy', @_);
+}
+
+sub wantecho
+{
+ return _want('echo', @_);
+}
+
+sub wantwx
+{
+ return _want('wx', @_);
+}
+
+sub wantdx
+{
+ return _want('dx', @_);
+}
+
+sub wanttalk
+{
+ return _want('talk', @_);
+}
+
+sub wantgrid
+{
+ return _want('grid', @_);
+}
+
+sub wantemail
+{
+ return _want('email', @_);
+}
+
+sub wantann_talk
+{
+ return _want('ann_talk', @_);
+}
+
+sub wantpc16
+{
+ return _want('pc16', @_);
+}
+
+sub wantsendpc16
+{
+ return _want('sendpc16', @_);
+}
+
+sub wantroutepc16
+{
+ return _want('routepc16', @_);
+}
+
+sub wantusstate
+{
+ return _want('usstate', @_);
+}
+
+sub wantdxcq
+{
+ return _want('dxcq', @_);
+}
+
+sub wantdxitu
+{
+ return _want('dxitu', @_);
+}
+
+sub wantgtk
+{
+ return _want('gtk', @_);
+}
+
+sub wantpc9x
+{
+ return _want('pc9x', @_);
+}
+
+sub wantlogininfo
+{
+ my $self = shift;
+ my $val = shift;
+ $self->{wantlogininfo} = $val if defined $val;
+ return $self->{wantlogininfo};
+}
+
+sub is_node
+{
+ my $self = shift;
+ return $self->{sort} =~ /^[ACRSX]$/;
+}
+
+sub is_local_node
+{
+ my $self = shift;
+ return grep $_ eq 'local_node', @{$self->{group}};
+}
+
+sub is_user
+{
+ my $self = shift;
+ return $self->{sort} =~ /^[UW]$/;
+}
+
+sub is_web
+{
+ my $self = shift;
+ return $self->{sort} eq 'W';
+}
+
+sub is_bbs
+{
+ my $self = shift;
+ return $self->{sort} eq 'B';
+}
+
+sub is_spider
+{
+ my $self = shift;
+ return $self->{sort} eq 'S';
+}
+
+sub is_clx
+{
+ my $self = shift;
+ return $self->{sort} eq 'C';
+}
+
+sub is_dxnet
+{
+ my $self = shift;
+ return $self->{sort} eq 'X';
+}
+
+sub is_arcluster
+{
+ my $self = shift;
+ return $self->{sort} eq 'R';
+}
+
+sub is_ak1a
+{
+ my $self = shift;
+ return $self->{sort} eq 'A';
+}
+
+sub is_rbn
+{
+ my $self = shift;
+ return $self->{sort} eq 'N'
+}
+
+sub unset_passwd
+{
+ my $self = shift;
+ delete $self->{passwd};
+ $self->put;
+}
+
+sub unset_passphrase
+{
+ my $self = shift;
+ delete $self->{passphrase};
+ $self->put;
+}
+
+sub set_believe
+{
+ my $self = shift;
+ my $call = uc shift;
+ $self->{believe} ||= [];
+ unless (grep $_ eq $call, @{$self->{believe}}) {
+ push @{$self->{believe}}, $call;
+ $self->put;
+ };
+}
+
+sub unset_believe
+{
+ my $self = shift;
+ my $call = uc shift;
+ if (exists $self->{believe}) {
+ $self->{believe} = [grep {$_ ne $call} @{$self->{believe}}];
+ delete $self->{believe} unless @{$self->{believe}};
+ $self->put;
+ }
+}
+
+sub believe
+{
+ my $self = shift;
+ return exists $self->{believe} ? @{$self->{believe}} : ();
+}
+
+sub lastping
+{
+ my $self = shift;
+ my $call = shift;
+ $self->{lastping} ||= {};
+ $self->{lastping} = {} unless ref $self->{lastping};
+ my $b = $self->{lastping};
+ $b->{$call} = shift if @_;
+ return $b->{$call};
+}
+
+#
+# read in the latest version of the user file. As this file is immutable, the file one really wants is
+# a later (generated) copy. But, if the plain users.v4 file is all we have, we'll use that.
+#
+
+sub readinjson
+{
+ my $fn = $filename;
+ my $nfn = "$fn.n";
+ my $ofn = "$fn.o";
+
+ my $ta = [gettimeofday];
+ my $count = 0;
+ my $s;
+ my $err = 0;
+
+ if (-e $nfn && -e $fn && (stat($nfn))[9] > (stat($fn))[9]) {
+ # move the old file to .o
+ unlink $ofn;
+ move($fn, $ofn);
+ move($nfn, $fn);
+ };
+
+ # if we don't have a users.v4 at this point, look for a backup users.v4.json, users.v4.n then users.v4.o
+ unless (-e $fn) {
+ move($nfn, $fn) unless -e $fn; # the users.v4 isn't there (maybe convert-users-v3-to-v4.pl
+ move("$fn.json", $fn); # from a run of convert-users-v3-to-v4.pl
+ move($ofn, $fn) unless -e $fn; # desperate now...
+ }
+
+ if ($ifh) {
+ $ifh->seek(0, 0);
+ } else {
+ LogDbg("DXUser","DXUser::readinjson: opening $fn as users file");
+ $ifh = IO::File->new("+<$fn") or die "Cannot open $fn ($!)";
+ }
+ my $pos = $ifh->tell;
+ while (<$ifh>) {
+ chomp;
+ my @f = split /\t/;
+ $u{$f[0]} = [$pos];
+ $count++;
+ $pos = $ifh->tell;
+ }
+ $ifh->seek(0, 0);
+
+ # $ifh is "global" and should not be closed
+
+ LogDbg('DXUser',"DXUser::readinjson $count record headers read from $fn in ". _diffms($ta) . " mS");
+ return $totusers = $count;
+}
+
+#
+# Write a newer copy of the users.v4 file to users.v4.n, which is what will be read in.
+# This means that the existing users.v4 is not touched during a run of dxspider, or at least
+# not yet.
+
+sub writeoutjson
+{
+ my $ofn = shift || "$filename.n";
+ my $ta = [gettimeofday];
+
+ my $ofh = IO::File->new(">$ofn") or die "$ofn write error $!";
+ my $count = 0;
+ $ifh->seek(0, 0);
+ for my $k (sort keys %u) {
+ my $l = get($k, 1);
+ if ($l) {
+ chomp $l;
+ print $ofh "$k\t$l\n";
+ ++$count;
+ } else {
+ LogDbg('DXUser', "DXUser::writeoutjson callsign $k not found")
+ }
+ }
+
+ $ofh->close;
+ LogDbg('DXUser',"DXUser::writeoutjson $count records written to $ofn in ". _diffms($ta) . " mS");
+ return $count;
+}
1;
__END__
+
+
+
+
+