finally working async framework

3 files changed, 289 insertions, 38 deletions

diff --git a/fs_selfservice/FS-SelfService/MANIFEST b/fs_selfservice/FS-SelfService/MANIFEST
index 3c490e7dd..ebd0d3b1a 100644
--- a/fs_selfservice/FS-SelfService/MANIFEST
+++ b/fs_selfservice/FS-SelfService/MANIFEST
@@ -1,6 +1,6 @@
 Changes
 Makefile.PL
 MANIFEST
-README
 SelfService.pm
 test.pl
+freeside-selfservice-clientd
diff --git a/fs_selfservice/FS-SelfService/SelfService.pm b/fs_selfservice/FS-SelfService/SelfService.pm
index 75e550a2d..3cd4fd94e 100644
--- a/fs_selfservice/FS-SelfService/SelfService.pm
+++ b/fs_selfservice/FS-SelfService/SelfService.pm
@@ -1,66 +1,95 @@
 package FS::SelfService;
 
-use 5.006;
 use strict;
-use warnings;
+use vars qw($VERSION @ISA @EXPORT_OK $socket);
+use Exporter;
+use Socket;
+use FileHandle;
+#use IO::Handle;
+use IO::Select;
+use Storable qw(nstore_fd fd_retrieve);
 
-require Exporter;
+$VERSION = '0.03';
 
-our @ISA = qw(Exporter);
+@ISA = qw( Exporter );
+@EXPORT_OK = qw( passwd );
 
-# Items to export into callers namespace by default. Note: do not export
-# names by default without a very good reason. Use EXPORT_OK instead.
-# Do not simply export all your public functions/methods/constants.
+$socket =  "/usr/local/freeside/selfservice_socket";
 
-# This allows declaration	use FS::SelfService ':all';
-# If you do not need this, moving things directly into @EXPORT or @EXPORT_OK
-# will save memory.
-our %EXPORT_TAGS = ( 'all' => [ qw(
-	
-) ] );
+$ENV{'PATH'} ='/usr/bin:/usr/ucb:/bin';
+$ENV{'SHELL'} = '/bin/sh';
+$ENV{'IFS'} = " \t\n";
+$ENV{'CDPATH'} = '';
+$ENV{'ENV'} = '';
+$ENV{'BASH_ENV'} = '';
 
-our @EXPORT_OK = ( @{ $EXPORT_TAGS{'all'} } );
+my $freeside_uid = scalar(getpwnam('freeside'));
+die "not running as the freeside user\n" if $> != $freeside_uid;
 
-our @EXPORT = qw(
-	
-);
-our $VERSION = '0.01';
+=head1 NAME
 
+FS::SelfService - Freeside self-service API
 
-# Preloaded methods go here.
+=head1 SYNOPSIS
 
-1;
-__END__
-# Below is stub documentation for your module. You better edit it!
+=head1 DESCRIPTION
 
-=head1 NAME
+Use this API to implement your own client "self-service" module.
 
-FS::SelfService - Perl extension for blah blah blah
+If you just want to customize the look of the existing "self-service" module,
+see XXXX instead.
 
-=head1 SYNOPSIS
+=head1 FUNCTIONS
 
-  use FS::SelfService;
-  blah blah blah
+=over 4
 
-=head1 DESCRIPTION
+=item passwd
 
-Stub documentation for FS::SelfService, created by h2xs. It looks like the
-author of the extension was negligent enough to leave the stub
-unedited.
+Returns the empty value on success, or an error message on errors.
 
-Blah blah blah.
+=cut
 
-=head2 EXPORT
+sub passwd {
+  my $param;
+  if ( ref($_[0]) ) {
+    $param = shift;
+  } else {
+    $param = { @_ };
+  }
 
-None by default.
+  $param->{_packet} = 'passwd';
 
+  simple_packet($param);
+}
 
-=head1 AUTHOR
+sub simple_packet {
+  my $packet = shift;
+  socket(SOCK, PF_UNIX, SOCK_STREAM, 0) or die "socket: $!";
+  connect(SOCK, sockaddr_un($socket)) or die "connect: $!";
+  nstore_fd($packet, \*SOCK) or die "can't send packet: $!";
+  SOCK->flush;
 
-A. U. Thor, E<lt>a.u.thor@a.galaxy.far.far.awayE<gt>
+  #shoudl trap: Magic number checking on storable file failed at blib/lib/Storable.pm (autosplit into blib/lib/auto/Storable/fd_retrieve.al) line 337, at /usr/local/share/perl/5.6.1/FS/SelfService.pm line 71
+
+  #block until there is a message on socket
+#  my $w = new IO::Select;
+#  $w->add(\*SOCK);
+#  my @wait = $w->can_read;
+  my $return = fd_retrieve(\*SOCK) or die "error reading result: $!";
+  die $return->{'_error'} if defined $return->{_error} && $return->{_error};
+
+  $return->{'error'};
+}
+
+=back
+
+=head1 BUGS
 
 =head1 SEE ALSO
 
-L<perl>.
+L<freeside-selfservice-clientd>, L<freeside-selfservice-server>
 
 =cut
+
+1;
+
diff --git a/fs_selfservice/FS-SelfService/freeside-selfservice-clientd b/fs_selfservice/FS-SelfService/freeside-selfservice-clientd
new file mode 100644
index 000000000..149f894e0
--- /dev/null
+++ b/fs_selfservice/FS-SelfService/freeside-selfservice-clientd
@@ -0,0 +1,222 @@
+#!/usr/bin/perl -w
+#
+# freeside-selfservice-clientd
+#
+# This is run REMOTELY over ssh by freeside-selfservice-server
+
+use strict;
+use subs qw(spawn logmsg);
+use Fcntl qw(:flock);
+use Socket;
+use Storable qw(nstore_fd fd_retrieve);
+use IO::Handle;
+use IO::Select;
+use IPC::Open2;
+
+use LockFile::Simple qw(lock unlock);
+
+use vars qw( $Debug );
+$Debug = 2;
+
+my $socket = "/usr/local/freeside/selfservice_socket";
+my $pid_file = "$socket.pid";
+my $lock_file = "$socket.lock";
+unlink $lock_file;
+
+my $me = '[client]';
+
+$|=1;
+
+#read data to be cached or something
+#warn "$me Reading init data\n" if $Debug;
+#my $signup_init = 
+
+warn "[client] Creating $socket\n" if $Debug;
+my $uaddr = sockaddr_un($socket);
+my $proto = getprotobyname('tcp');
+socket(Server,PF_UNIX,SOCK_STREAM,0) or die "socket: $!";
+unlink($socket);
+bind(Server, $uaddr) or die "bind: $!";
+listen(Server,SOMAXCONN) or die "listen: $!";
+
+if ( -e $pid_file ) {
+  open(PIDFILE,"<$pid_file");
+  #chomp( my $old_pid = <PIDFILE> );
+  my $old_pid = <PIDFILE>;
+  close PIDFILE;
+  $old_pid =~ /^(\d+)$/;
+  kill 'TERM', $1;
+}
+open(PIDFILE,">$pid_file");
+print PIDFILE "$$\n";
+close PIDFILE;
+
+#my $waitedpid;
+#sub REAPER { $waitedpid = wait; $SIG{CHLD} = \&REAPER; }
+#$SIG{CHLD} =  \&REAPER;
+
+warn "[client] entering main loop\n" if $Debug;
+
+#sub spawn;
+#sub logmsg;
+
+my %kids;
+
+  #    my $gar = <STDIN>;
+
+#my $s = new IO::Select;
+#$s->add(\*STDIN);
+#$s->add(\*Server);
+
+#for ( $waitedpid = 0;
+#      accept(Client,Server) || $waitedpid;
+#      $waitedpid = 0, close Client)
+#{
+#  next if $waitedpid;
+
+#$SIG{PIPE} = sub { warn "SIGPIPE received" };
+#$SIG{CHLD} = sub { warn "SIGCHLD received" };
+
+sub REAPER { warn "SIGCHLD received"; my $pid = wait; $SIG{CHLD} = \&REAPER; }
+#sub REAPER { my $pid = wait; delete $kids{$pid}; $SIG{CHLD} = \&REAPER; }
+$SIG{CHLD} =  \&REAPER;
+
+warn "[client] creating IO::Select\n" if $Debug;
+my $s = new IO::Select;
+$s->add(\*STDIN);
+$s->add(\*Server);
+
+while (1) {
+
+warn "[client] waiting for connection or token\n" if $Debug;
+while ( my @handles = $s->can_read ) {
+
+  foreach my $handle ( @handles ) {
+
+    if ( $handle == \*STDIN ) {
+
+#      my $gar = <STDIN>;
+#      die $gar;
+
+      my $packet = fd_retrieve(\*STDIN);
+      my $token = $packet->{'_token'};
+      warn "[client] received packet with token $token\n".
+           join('', map { " $_=>$packet->{$_}\n" } keys %$packet )
+        if $Debug;
+     if ( exists($kids{$token}) ) {
+        warn "[client] sending return packet to $token via $kids{$token}\n"
+          if $Debug;
+        nstore_fd($packet, $kids{$token});
+        warn "[client] flushing $kids{$token}\n" if $Debug;
+        $kids{$token}->flush;
+        #eval { $kids{$token}->flush; };
+        #die "error flushing?!?!? $@\n" if $@ ne '';
+        #warn "[client] closing $kids{$token}\n";
+        #close $kids{$token};
+        #warn "[client] deleting $kids{$token}\n";
+        #delete $kids{$token};
+        warn "[client] done with $token\n" if $Debug;
+      } else {
+        warn "[client] WARNING: unknown token $token, discarding message";
+        #die "[client] FATAL: unknown token $token, discarding message";
+      }
+
+    } elsif ( $handle == \*Server ) {
+
+      warn "[client] received local connection; forking\n" if $Debug;
+
+      accept(Client, Server);
+
+      spawn sub { #child
+        warn "[client-$$] reading packet from local client" if $Debug > 1;
+        my $packet = fd_retrieve(\*Client);
+        warn "[client-$$] packet received:\n".
+             join('', map { " $_=>$packet->{$_}\n" } keys %$packet )
+          if $Debug > 1;
+        my $command = $packet->{'command'};
+        #handle some commands weirdly?
+        $packet->{_token}=$$; #??
+
+        warn "[client-$$] sending packet to remote server" if $Debug > 1;
+        flock(STDOUT, LOCK_EX); #acquire write lock
+        #lock($lock_file);
+        nstore_fd($packet, \*STDOUT);
+        STDOUT->flush;
+        #unlock($lock_file);
+        flock(STDOUT, LOCK_UN); #release write lock
+
+        warn "[client-$$] waiting for response from parent" if $Debug > 1;
+
+        #block until parent has a message
+        my $w = new IO::Select;
+        $w->add(\*STDIN);
+        my @wait = $w->can_read;
+        my $rv = fd_retrieve(\*STDIN);
+
+        #close STDIN;
+
+        warn "[client-$$] sending response to local client" if $Debug > 1;
+
+        #send message to local client
+        nstore_fd($rv, \*Client);
+        Client->flush;
+
+        close Client;
+
+        warn "[client-$$] child exiting" if $Debug > 1;
+
+        #while (1) { sleep 5 };
+        #sleep 5;
+        exit;
+
+      }; #eo child
+
+      #close Client; #in parent, right?
+
+    } else {
+      die "wtf?  $handle";
+    }
+
+  }
+
+  warn "[client] done handling messages; returning to wait-state" if $Debug;;
+
+}
+
+#die "[client] died unexpectedly: $!\n";
+warn "[client] fell-through unexpectedly: $!\n" if $Debug;
+
+} #WTF?
+
+sub spawn {
+    my $coderef = shift;
+
+    unless (@_ == 0 && $coderef && ref($coderef) eq 'CODE') {
+        use Carp;
+        confess "usage: spawn CODEREF";
+    }
+
+    my $pid;
+    #if (!defined($pid = fork)) {
+    my $kid = new IO::Handle;
+    if (!defined($pid = open($kid, '|-'))) {
+        logmsg "WARNING: cannot fork: $!";
+        return;
+    } elsif ($pid) {
+        logmsg "begat $pid" if $Debug;
+        $kids{$pid} = $kid;
+        #$kids{$pid}->autoflush;
+        return; # I'm the parent
+    }
+    # else I'm the child -- go spawn
+
+#    open(STDIN,  "<&Client")   || die "can't dup client to stdin";
+#    open(STDOUT, ">&Client")   || die "can't dup client to stdout";
+    ## open(STDERR, ">&STDOUT") || die "can't dup stdout to stderr";
+    exit &$coderef();
+}
+
+#sub logmsg { print "$0 $$: @_ at ", scalar localtime, "\n" }
+#DON'T PRINT!!!!!
+sub logmsg { warn "[client] $0 $$: @_ at ", scalar localtime, "\n" }
+