package DXCommandmode;
+use POSIX;
+
@ISA = qw(DXChannel);
use DXUtil;
use DXUser;
use DXVars;
use DXDebug;
+use DXM;
+use DXLog;
+use DXLogPrint;
+use DXBearing;
+use CmdAlias;
+use Filter;
+use Minimuf;
+use DXDb;
+use AnnTalk;
+use WCY;
+use Sun;
use strict;
-use vars qw( %Cache $last_dir_mtime @cmd);
+use vars qw(%Cache %cmd_cache $errstr %aliases $scriptbase);
+
+%Cache = (); # cache of dynamically loaded routine's mod times
+%cmd_cache = (); # cache of short names
+$errstr = (); # error string from eval
+%aliases = (); # aliases for (parts of) commands
+$scriptbase = "$main::root/scripts"; # the place where all users start scripts go
+
+#
+# obtain a new connection this is derived from dxchannel
+#
-$last_dir_mtime = 0; # the last time one of the cmd dirs was modified
-@cmd = undef; # a list of commands+path pairs (in alphabetical order)
+sub new
+{
+ my $self = DXChannel::alloc(@_);
+ return $self;
+}
# this is how a a connection starts, you get a hello message and the motd with
# possibly some other messages asking you to set various things up if you are
sub start
{
- my ($self, $line) = @_;
- my $user = $self->{user};
- my $call = $self->{call};
- my $name = $self->{name};
- $name = $call if !defined $name;
-
- $self->msg('l2',$name);
- $self->send_file($main::motd) if (-e $main::motd);
- $self->msg('pr', $call);
- $self->state('prompt'); # a bit of room for further expansion, passwords etc
- $self->{priv} = $user->priv;
- $self->{priv} = 0 if $line =~ /^(ax|te)/; # set the connection priv to 0 - can be upgraded later
- $self->{consort} = $line; # save the connection type
+ my ($self, $line, $sort) = @_;
+ my $user = $self->{user};
+ my $call = $self->{call};
+ my $name = $user->{name};
+
+ $self->{name} = $name ? $name : $call;
+ $self->send($self->msg('l2',$self->{name}));
+ $self->send_file($main::motd) if (-e $main::motd);
+ $self->state('prompt'); # a bit of room for further expansion, passwords etc
+ $self->{priv} = $user->priv;
+ $self->{lang} = $user->lang;
+ $self->{pagelth} = $user->pagelth || 20;
+ $self->{priv} = 0 if $line =~ /^(ax|te)/; # set the connection priv to 0 - can be upgraded later
+ $self->{consort} = $line; # save the connection type
+
+ # set some necessary flags on the user if they are connecting
+ $self->{beep} = $user->wantbeep;
+ $self->{ann} = $user->wantann;
+ $self->{wwv} = $user->wantwwv;
+ $self->{wcy} = $user->wantwcy;
+ $self->{talk} = $user->wanttalk;
+ $self->{wx} = $user->wantwx;
+ $self->{dx} = $user->wantdx;
+ $self->{logininfo} = $user->wantlogininfo;
+ $self->{here} = 1;
+
+
+ # add yourself to the database
+ my $node = DXNode->get($main::mycall) or die "$main::mycall not allocated in DXNode database";
+ my $cuser = DXNodeuser->new($self, $node, $call, 0, 1);
+ $node->dxchan($self) if $call eq $main::myalias; # send all output for mycall to myalias
+
+ # issue a pc16 to everybody interested
+ my $nchan = DXChannel->get($main::mycall);
+ my @pc16 = DXProt::pc16($nchan, $cuser);
+ for (@pc16) {
+ DXProt::broadcast_all_ak1a($_);
+ }
+ Log('DXCommand', "$call connected");
+
+ # send prompts and things
+ my $info = DXCluster::cluster();
+ $self->send("Cluster:$info");
+ $self->send($self->msg('namee1')) if !$user->name;
+ $self->send($self->msg('qthe1')) if !$user->qth;
+ $self->send($self->msg('qll')) if !$user->qra || (!$user->lat && !$user->long);
+ $self->send($self->msg('hnodee1')) if !$user->qth;
+ $self->send($self->msg('m9')) if DXMsg::for_me($call);
+ $self->send($self->msg('pr', $call));
+
+ # decide on echo
+ if (!$user->wantecho) {
+ $self->send_now('E', "0");
+ $self->send($self->msg('echow'));
+ }
+
+ $self->tell_login('loginu');
+
}
#
# This is the normal command prompt driver
#
+
sub normal
{
- my $self = shift;
- my $user = $self->{user};
- my $call = $self->{call};
- my $cmdline = shift;
-
- # strip out //
- $cmdline =~ s|//|/|og;
-
- # split the command line up into parts, the first part is the command
- my ($cmd, $args) = $cmdline =~ /^([\w\/]+)\s*(.*)/o;
-
- if ($cmd) {
-
- # first expand out the entry to a command
- $cmd = search($cmd);
-
- my @ans = $self->eval_file($main::localcmd, $cmd, $args);
- @ans = $self->eval_file($main::cmd, $cmd, $args) if !$ans[0];
- if ($ans[0]) {
- shift @ans;
- $self->send(@ans) if @ans > 0;
+ my $self = shift;
+ my $cmdline = shift;
+ my @ans;
+
+ # remove leading and trailing spaces
+ $cmdline =~ s/^\s*(.*)\s*$/$1/;
+
+ if ($self->{state} eq 'page') {
+ my $i = $self->{pagelth};
+ my $ref = $self->{pagedata};
+ my $tot = @$ref;
+
+ # abort if we get a line starting in with a
+ if ($cmdline =~ /^a/io) {
+ undef $ref;
+ $i = 0;
+ }
+
+ # send a tranche of data
+ while ($i-- > 0 && @$ref) {
+ my $line = shift @$ref;
+ $line =~ s/\s+$//o; # why am having to do this?
+ $self->send($line);
+ }
+
+ # reset state if none or else chuck out an intermediate prompt
+ if ($ref && @$ref) {
+ $tot -= $self->{pagelth};
+ $self->send($self->msg('page', $tot));
+ } else {
+ $self->state('prompt');
+ }
+ } elsif ($self->{state} eq 'sysop') {
+ my $passwd = $self->{user}->passwd;
+ my @pw = split / */, $passwd;
+ if ($passwd) {
+ my @l = @{$self->{passwd}};
+ my $str = "$pw[$l[0]].*$pw[$l[1]].*$pw[$l[2]].*$pw[$l[3]].*$pw[$l[4]]";
+ if ($cmdline =~ /$str/) {
+ $self->{priv} = $self->{user}->priv;
+ } else {
+ $self->send($self->msg('sorry'));
+ }
+ } else {
+ $self->send($self->msg('sorry'));
+ }
+ delete $self->{passwd};
+ $self->state('prompt');
} else {
- shift @ans;
- if (@ans > 0) {
- $self->msg('e2', @ans);
- } else {
- $self->msg('e1');
- }
+ @ans = run_cmd($self, $cmdline); # if length $cmdline;
+
+ if ($self->{pagelth} && @ans > $self->{pagelth}) {
+ my $i;
+ for ($i = $self->{pagelth}; $i-- > 0; ) {
+ my $line = shift @ans;
+ $line =~ s/\s+$//o; # why am having to do this?
+ $self->send($line);
+ }
+ $self->{pagedata} = \@ans;
+ $self->state('page');
+ $self->send($self->msg('page', scalar @ans));
+ } else {
+ for (@ans) {
+ $self->send($_) if $_;
+ }
+ }
+ }
+
+ # send a prompt only if we are in a prompt state
+ $self->prompt() if $self->{state} =~ /^prompt/o;
+}
+
+#
+# this is the thing that runs the command, it is done like this for the
+# benefit of remote command execution
+#
+
+sub run_cmd
+{
+ my $self = shift;
+ my $user = $self->{user};
+ my $call = $self->{call};
+ my $cmdline = shift;
+ my @ans;
+
+ if ($self->{func}) {
+ my $c = qq{ \@ans = $self->{func}(\$self, \$cmdline) };
+ dbg('eval', "stored func cmd = $c\n");
+ eval $c;
+ if ($@) {
+ return ("Syserr: Eval err $errstr on stored func $self->{func}", $@);
+ }
+ } else {
+
+ return () if length $cmdline == 0;
+
+ # strip out //
+ $cmdline =~ s|//|/|og;
+
+ # split the command line up into parts, the first part is the command
+ my ($cmd, $args) = split /\s+/, $cmdline, 2;
+ $args = "" unless $args;
+
+ if ($cmd) {
+
+ my ($path, $fcmd);
+
+ dbg('command', "cmd: $cmd");
+
+ # alias it if possible
+ my $acmd = CmdAlias::get_cmd($cmd);
+ if ($acmd) {
+ ($cmd, $args) = split /\s+/, "$acmd $args", 2;
+ $args = "" unless $args;
+ dbg('command', "aliased cmd: $cmd $args");
+ }
+
+ # first expand out the entry to a command
+ ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
+ ($path, $fcmd) = search($main::cmd, $cmd, "pl") if !$path || !$fcmd;
+
+ if ($path && $cmd) {
+ dbg('command', "path: $cmd cmd: $fcmd");
+
+ my $package = find_cmd_name($path, $fcmd);
+ @ans = (0) if !$package ;
+
+ if ($package) {
+ dbg('command', "package: $package");
+ my $c;
+ unless (exists $Cache{$package}->{'sub'}) {
+ $c = eval $Cache{$package}->{'eval'};
+ if ($@) {
+ return DXDebug::shortmess($@);
+ }
+ $Cache{$package}->{'sub'} = $c;
+ }
+ $c = $Cache{$package}->{'sub'};
+ eval {
+ @ans = &{$c}($self, $args);
+ };
+
+ if ($@) {
+ cluck($@);
+ return (DXDebug::shortmess($@));
+ };
+ }
+ } else {
+ dbg('command', "cmd: $cmd not found");
+ return ($self->msg('e1'));
+ }
+ }
}
- } else {
- $self->msg('e1');
- }
-
- # send a prompt only if we are in a prompt state
- $self->prompt() if $self->{state} =~ /^prompt/o;
+
+ shift @ans;
+ return (@ans);
}
#
#
sub process
{
-
+ my $t = time;
+ my @dxchan = DXChannel->get_all();
+ my $dxchan;
+
+ foreach $dxchan (@dxchan) {
+ next if $dxchan->sort ne 'U';
+
+ # send a prompt if no activity out on this channel
+ if ($t >= $dxchan->t + $main::user_interval) {
+ $dxchan->prompt() if $dxchan->{state} =~ /^prompt/o;
+ $dxchan->t($t);
+ }
+ }
}
#
#
sub finish
{
+ my $self = shift;
+ my $conn = shift;
+ my $call = $self->call;
+
+ # I was the last node visited
+ $self->user->node($main::mycall);
+
+ # log out text
+ if ($conn && -e "$main::data/logout") {
+ open(I, "$main::data/logout") or confess;
+ my @in = <I>;
+ close(I);
+ $self->send_now('D', @in);
+ sleep(1);
+ }
+
+ if ($call eq $main::myalias) { # unset the channel if it is us really
+ my $node = DXNode->get($main::mycall);
+ $node->{dxchan} = 0;
+ }
+
+ # issue a pc17 to everybody interested
+ my $nchan = DXChannel->get($main::mycall);
+ my $pc17 = $nchan->pc17($self);
+ DXProt::broadcast_all_ak1a($pc17);
+
+ # send info to all logged in thingies
+ $self->tell_login('logoutu');
+ Log('DXCommand', "$call disconnected");
+ my $ref = DXCluster->get_exact($call);
+ $ref->del() if $ref;
}
#
sub prompt
{
- my $self = shift;
- my $call = $self->{call};
- DXChannel::msg($self, 'pr', $call);
+ my $self = shift;
+ $self->send($self->msg($self->here ? 'pr' : 'pr2', $self->call));
+}
+
+# broadcast a message to all users [except those mentioned after buffer]
+sub broadcast
+{
+ my $pkg = shift; # ignored
+ my $s = shift; # the line to be rebroadcast
+ my @except = @_; # to all channels EXCEPT these (dxchannel refs)
+ my @list = DXChannel->get_all(); # just in case we are called from some funny object
+ my ($dxchan, $except);
+
+ L: foreach $dxchan (@list) {
+ next if !$dxchan->sort eq 'U'; # only interested in user channels
+ foreach $except (@except) {
+ next L if $except == $dxchan; # ignore channels in the 'except' list
+ }
+ $dxchan->send($s); # send it
+ }
+}
+
+# gimme all the users
+sub get_all
+{
+ my @list = DXChannel->get_all();
+ my $ref;
+ my @out;
+ foreach $ref (@list) {
+ push @out, $ref if $ref->sort eq 'U';
+ }
+ return @out;
+}
+
+# run a script for this user
+sub run_script
+{
+ my $self = shift;
+ my $silent = shift || 0;
+
}
#
sub search
{
- my $short_cmd = shift;
- return $short_cmd; # just return it for now
+ my ($path, $short_cmd, $suffix) = @_;
+ my ($apath, $acmd);
+
+ # commands are lower case
+ $short_cmd = lc $short_cmd;
+ dbg('command', "command: $path $short_cmd\n");
+
+ # do some checking for funny characters
+ return () if $short_cmd =~ /\/$/;
+
+ # return immediately if we have it
+ ($apath, $acmd) = split ',', $cmd_cache{$short_cmd} if $cmd_cache{$short_cmd};
+ if ($apath && $acmd) {
+ dbg('command', "cached $short_cmd = ($apath, $acmd)\n");
+ return ($apath, $acmd);
+ }
+
+ # if not guess
+ my @parts = split '/', $short_cmd;
+ my $dirfn;
+ my $curdir = $path;
+ my $p;
+ my $i;
+ my @lparts;
+
+ for ($i = 0; $i < @parts; $i++) {
+ my $p = $parts[$i];
+ opendir(D, $curdir) or confess "can't open $curdir $!";
+ my @ls = readdir D;
+ closedir D;
+ my $l;
+ foreach $l (sort @ls) {
+ next if $l =~ /^\./;
+ if ($i < $#parts) { # we are dealing with directories
+ if ((-d "$curdir/$l") && $p eq substr($l, 0, length $p)) {
+ dbg('command', "got dir: $curdir/$l\n");
+ $dirfn .= "$l/";
+ $curdir .= "/$l";
+ last;
+ }
+ } else { # we are dealing with commands
+ @lparts = split /\./, $l;
+ next if $lparts[$#lparts] ne $suffix; # only look for .$suffix files
+ if ($p eq substr($l, 0, length $p)) {
+ pop @lparts; # remove the suffix
+ $l = join '.', @lparts;
+ # chop $dirfn; # remove trailing /
+ $dirfn = "" unless $dirfn;
+ $cmd_cache{"$short_cmd"} = join(',', ($path, "$dirfn$l")); # cache it
+ dbg('command', "got path: $path cmd: $dirfn$l\n");
+ return ($path, "$dirfn$l");
+ }
+ }
+ }
+ }
+ return ();
}
+# clear the command name cache
+sub clear_cmd_cache
+{
+ %cmd_cache = ();
+}
+
#
# the persistant execution of things from the command directories
#
#require Devel::Symdump;
sub valid_package_name {
- my($string) = @_;
- $string =~ s/([^A-Za-z0-9\/])/sprintf("_%2x",unpack("C",$1))/eg;
-
- #second pass only for words starting with a digit
- $string =~ s|/(\d)|sprintf("/_%2x",unpack("C",$1))|eg;
-
- #Dress it up as a real package name
- $string =~ s|/|_|g;
- return "Emb_" . $string;
-}
-
-#borrowed from Safe.pm
-sub delete_package {
- my $pkg = shift;
- my ($stem, $leaf);
-
- no strict 'refs';
- $pkg = "DXChannel::$pkg\::"; # expand to full symbol table name
- ($stem, $leaf) = $pkg =~ m/(.*::)(\w+::)$/;
+ my($string) = @_;
+ $string =~ s/([^A-Za-z0-9\/])/sprintf("_%2x",unpack("C",$1))/eg;
- my $stem_symtab = *{$stem}{HASH};
+ #second pass only for words starting with a digit
+ $string =~ s|/(\d)|sprintf("/_%2x",unpack("C",$1))|eg;
- delete $stem_symtab->{$leaf};
+ #Dress it up as a real package name
+ $string =~ s/\//_/og;
+ return $string;
}
-sub eval_file {
- my $self = shift;
- my $path = shift;
- my $cmdname = shift;
- my $package = valid_package_name($cmdname);
- my $filename = "$path/$cmdname.pl";
- my $mtime = -M $filename;
-
- # return if we can't find it
- return (0, DXM::msg('e1')) if !defined $mtime;
-
- if(defined $Cache{$package}{mtime} && $Cache{$package}{mtime } <= $mtime) {
- #we have compiled this subroutine already,
- #it has not been updated on disk, nothing left to do
- #print STDERR "already compiled $package->handler\n";
- ;
- } else {
- local *FH;
- if (!open FH, $filename) {
- return (0, "Syserr: can't open '$filename' $!");
- };
- local($/) = undef;
- my $sub = <FH>;
- close FH;
+# find a cmd reference
+# this is really for use in user written stubs
+#
+# use the result as a symbolic reference:-
+#
+# no strict 'refs';
+# @out = &$r($self, $line);
+#
+sub find_cmd_ref
+{
+ my $cmd = shift;
+ my $r;
+
+ if ($cmd) {
- #wrap the code into a subroutine inside our unique package
- my $eval = qq{package DXChannel; sub $package { $sub; }};
- if (isdbg('eval')) {
- my @list = split /\n/, $eval;
- my $line;
- foreach (@list) {
- dbg('eval', $_, "\n");
- }
- }
- #print "eval $eval\n";
- {
- #hide our variables within this block
- my($filename,$mtime,$package,$sub);
- eval $eval;
+ # first expand out the entry to a command
+ my ($path, $fcmd) = search($main::localcmd, $cmd, "pl");
+ ($path, $fcmd) = search($main::cmd, $cmd, "pl") if !$path || !$fcmd;
+
+ # make sure it is loaded
+ $r = find_cmd_name($path, $fcmd);
}
- if ($@) {
- delete_package($package);
- return (0, "Syserr: Eval err $@ on $package");
+ return $r;
+}
+
+#
+# this bit of magic finds a command in the offered directory
+sub find_cmd_name {
+ my $path = shift;
+ my $cmdname = shift;
+ my $package = valid_package_name($cmdname);
+ my $filename = "$path/$cmdname.pl";
+ my $mtime = -M $filename;
+
+ # return if we can't find it
+ $errstr = undef;
+ unless (defined $mtime) {
+ $errstr = DXM::msg('e1');
+ return undef;
}
+
+ if(defined $Cache{$package}->{mtime} &&$Cache{$package}->{mtime} <= $mtime) {
+ #we have compiled this subroutine already,
+ #it has not been updated on disk, nothing left to do
+ #print STDERR "already compiled $package->handler\n";
+ ;
+ } else {
+
+ my $sub = readfilestr($filename);
+ unless ($sub) {
+ $errstr = "Syserr: can't open '$filename' $!";
+ return undef;
+ };
+
+ #wrap the code into a subroutine inside our unique package
+ my $eval = qq( sub { $sub } );
+
+ if (isdbg('eval')) {
+ my @list = split /\n/, $eval;
+ my $line;
+ for (@list) {
+ dbg('eval', $_, "\n");
+ }
+ }
- #cache it unless we're cleaning out each time
- $Cache{$package}{mtime} = $mtime;
- }
-
- my @r;
- my $c = qq{ \@r = \$self->$package(\@_); };
- dbg('eval', "cluster cmd = $c\n");
- eval $c; ;
- if ($@) {
- delete_package($package);
- return (0, "Syserr: Eval err $@ on cached $package");
- }
-
- #take a look if you want
- #print Devel::Symdump->rnew($package)->as_string, $/;
- return @r;
+ $Cache{$package} = {mtime => $mtime, 'eval' => $eval };
+ }
+
+ return $package;
}
1;