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tdebase/tdeioslave/fish/fish.pl

370 lines
11 KiB

#!/usr/bin/perl
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, version 2 of the License
=pod
This file was transferred by tdeio_fish, a network client part of the
KDE project. You may safely delete it, it will be transferred again
when needed. It's only purpose is to make tdeio_fish access faster and
more reliable.
=cut
use Fcntl;
$|++;
#open(DEBUG,">/tmp/tdeio_fish.debug.$$.log");
# save code in initial directory if just transferred
if (defined $code) {
unlink('.fishsrv.pl');
sysopen(FH,'.fishsrv.pl',O_WRONLY|O_CREAT|O_EXCL);
print FH $code;
close(FH);
chmod(0444,'.fishsrv.pl');
# request new code if it changed (checksum mismatch)
# for automatic upgrades
} elsif ($ARGV[0] ne "{CHECKSUM}") {
$|=1;
print "### 100 transfer fish server\n";
while(<STDIN>) {
last if /^__END__/;
$code.=$_;
}
exit(eval($code));
}
# we are up and running.
print "### 200\n";
use strict;
use POSIX qw(getcwd dup2 strftime);
$SIG{'CHLD'} = 'IGNORE';
$| = 1;
MAIN: while (<STDIN>) {
chomp;
chomp;
next if !length($_) || substr($_,0,1) ne '#';
#print DEBUG "$_\n";
s/^#//;
/^VER / && do {
# We do not advertise "append" capability anymore, as "write" is
# as fast in perl mode and more reliable (overlapping writes)
print "VER 0.0.3 copy lscount lslinks lsmime exec stat\n### 200\n";
next;
};
/^PWD$/ && do {
print getcwd(),"\n### 200\n";
next;
};
/^SYMLINK\s+((?:\\.|[^\\])*?)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $ofn = unquote($1);
my $fn = unquote($2);
print (symlink($ofn,$fn)?"### 200\n":"### 500 $!\n");
next;
};
/^COPY\s+((?:\\.|[^\\])*?)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $ofn = unquote($1);
my $fn = unquote($2);
my ($size) = (stat($ofn))[7];
my $read = 1;
if (-l $ofn) {
my $dest = readlink($ofn);
unlink($fn);
symlink($dest,$fn) || ($read = 0);
} else {
sysopen(FH,$ofn,O_RDONLY) || do { print "### 500 $!\n"; next; };
sysopen(OFH,$fn,O_WRONLY|O_CREAT|O_TRUNC) || do { close(FH); print "### 500 $!\n"; next; };
local $/ = undef;
my $buffer = '';
while ($size > 32768 && ($read = sysread(FH,$buffer,32768)) > 0) {
$size -= $read;
if (syswrite(OFH,$buffer,$read) != $read) {
close(FH); close(OFH);
print "### 500 $!\n";
next MAIN;
}
}
while ($size > 0 && ($read = sysread(FH,$buffer,$size)) > 0) {
$size -= $read;
if (syswrite(OFH,$buffer,$read) != $read) {
close(FH); close(OFH);
print "### 500 $!\n";
next MAIN;
}
}
close(FH);
close(OFH);
}
if ($read > 0) {
print "### 200\n";
} else {
print "### 500 $!\n";
}
next;
};
/^LINK\s+((?:\\.|[^\\])*?)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $ofn = unquote($1);
my $fn = unquote($2);
print (link($ofn,$fn)?"### 200\n":"### 500 $!\n");
next;
};
/^RENAME\s+((?:\\.|[^\\])*?)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $ofn = unquote($1);
my $fn = unquote($2);
print (rename($ofn,$fn)?"### 200\n":"### 500 $!\n");
next;
};
/^CHGRP\s+(\d+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $fn = unquote($2);
print (chown(-1,int($1),$fn)?"### 200\n":"### 500 $!\n");
next;
};
/^CHOWN\s+(\d+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $fn = unquote($2);
print (chown(int($1),-1,$fn)?"### 200\n":"### 500 $!\n");
next;
};
/^CHMOD\s+([0-7]+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $fn = unquote($2);
print (chmod(oct($1),$fn)?"### 200\n":"### 500 $!\n");
next;
};
/^DELE\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $fn = unquote($1);
print (unlink($fn)?"### 200\n":"### 500 $!\n");
next;
};
/^RMD\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $dn = unquote($1);
print (rmdir($dn)?"### 200\n":"### 500 $!\n");
next;
};
/^MKD\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $dn = unquote($1);
if (mkdir($dn,0777)) {
print "### 200\n";
} else {
my $err = $!;
print (chdir($dn)?"### 501 $err\n":"### 500 $err\n");
}
next;
};
/^CWD\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $dn = unquote($1);
print (chdir($dn)?"### 200\n":"### 500 $!\n");
next;
};
/^LIST\s+((?:\\.|[^\\])*?)\s*$/ && do {
list($1, 1);
next;
};
/^STAT\s+((?:\\.|[^\\])*?)\s*$/ && do {
list($1, 0);
next;
};
/^WRITE\s+(\d+)\s+(\d+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
write_loop($2,$3,O_WRONLY|O_CREAT,$1);
next;
};
/^APPEND\s+(\d+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
write_loop($1,$2,O_WRONLY|O_APPEND);
next;
};
/^STOR\s+(\d+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
write_loop($1,$2,O_WRONLY|O_CREAT|O_TRUNC);
next;
};
/^RETR\s+((?:\\.|[^\\])*?)\s*$/ && do {
read_loop($1);
next;
};
/^READ\s+(\d+)\s+(\d+)\s+((?:\\.|[^\\])*?)\s*$/ && do {
read_loop($3,$2,$1);
next;
};
/^EXEC\s+((?:\\.|[^\\])*?)\s+((?:\\.|[^\\])*?)\s*$/ && do {
my $tempfile = unquote($2);
my $command = unquote($1);
$command = $command . ";echo \"###RESULT: \$?\"";
print("### 500 $!\n"), next
if (!sysopen(FH,$tempfile,O_CREAT|O_EXCL|O_WRONLY,0600));
my $pid = fork();
print("### 500 $!\n"), next
if (!defined $pid);
if ($pid == 0) {
open(STDOUT,'>>&FH');
open(STDERR,'>>&FH');
open(STDIN,'</dev/null'); # not sure here, ms windows anyone?
exec('/bin/sh','-c',$command);
print STDERR "Couldn't exec /bin/sh: $!\n";
exit(255);
}
waitpid($pid,0);
close(FH);
print "### 200\n";
next;
};
}
exit(0);
sub list {
my $dn = unquote($_[0]);
my @entries;
if (!-e $dn) {
print "### 404 File does not exist\n";
return;
} elsif ($_[1] && -d _) {
opendir(DIR,$dn) || do { print "### 500 $!\n"; return; };
@entries = readdir(DIR);
closedir(DIR);
} else {
($dn, @entries) = $dn =~ m{(.*)/(.*)};
$dn = '/' if (!length($dn));
}
print scalar(@entries),"\n### 100\n";
my $cwd = getcwd();
chdir($dn) || do { print "### 500 $!\n"; return; };
foreach (@entries) {
my $link = readlink;
my ($mode,$uid,$gid,$size,$mtime) = (lstat)[2,4,5,7,9];
print filetype($mode,$link,$uid,$gid);
print "S$size\n";
print strftime("D%Y %m %d %H %M %S\n",localtime($mtime));
print ":$_\n";
print "L$link\n" if defined $link;
print mimetype($_);
print "\n";
}
chdir($cwd);
print "### 200\n";
}
sub read_loop {
my $fn = unquote($_[0]);
my ($size) = ($_[1]?int($_[1]):(stat($fn))[7]);
my $error = '';
print "### 501 Is directory\n" and return if -d $fn;
sysopen(FH,$fn,O_RDONLY) || ($error = $!);
if ($_[2]) {
sysseek(FH,int($_[2]),0) || do { close(FH); $error ||= $!; };
}
print "### 500 $error\n" and return if $error;
if (@_ < 2) {
print "$size\n";
}
print "### 100\n";
my $buffer = '';
my $read = 1;
while ($size > 32768 && ($read = sysread(FH,$buffer,32768)) > 0) {
#print DEBUG "$size left, $read read\n";
$size -= $read;
print $buffer;
}
while ($size > 0 && ($read = sysread(FH,$buffer,$size)) > 0) {
#print DEBUG "$size left, $read read\n";
$size -= $read;
print $buffer;
}
while ($size > 0) {
print ' ';
$size--;
}
$error ||= $! if $read <= 0;
close(FH);
if (!$error) {
print "### 200\n";
} else {
print "### 500 $error\n";
}
}
sub write_loop {
my $size = int($_[0]);
my $fn = unquote($_[1]);
#print DEBUG "write_loop called $size size, $fn fn, $_[2]\n";
my $error = '';
sysopen(FH,$fn,$_[2]) || do { print "### 400 $!\n"; return; };
eval { flock(FH,2); };
if ($_[3]) {
sysseek(FH,int($_[3]),0) || do { close(FH);print "### 400 $!\n"; return; };
}
<STDIN>;
print "### 100\n";
my $buffer = '';
my $read = 1;
while ($size > 32768 && ($read = read(STDIN,$buffer,32768)) > 0) {
#print DEBUG "$size left, $read read\n";
$size -= $read;
$error ||= $! if (syswrite(FH,$buffer,$read) != $read);
}
while ($size > 0 && ($read = read(STDIN,$buffer,$size)) > 0) {
#print DEBUG "$size left, $read read\n";
$size -= $read;
$error ||= $! if (syswrite(FH,$buffer,$read) != $read);
}
close(FH);
if (!$error) {
print "### 200\n";
} else {
print "### 500 $error\n";
}
}
sub unquote { $_ = shift; s/\\(.)/$1/g; return $_; }
sub filetype {
my ($mode,$link,$uid,$gid) = @_;
my $result = 'P';
while (1) {
-f _ && do { $result .= '-'; last; };
-d _ && do { $result .= 'd'; last; };
defined($link) && do { $result .= 'l'; last; };
-c _ && do { $result .= 'c'; last; };
-b _ && do { $result .= 'b'; last; };
-S _ && do { $result .= 's'; last; };
-p _ && do { $result .= 'p'; last; };
$result .= '?'; last;
}
$result .= ($mode & 0400?'r':'-');
$result .= ($mode & 0200?'w':'-');
$result .= ($mode & 0100?($mode&04000?'s':'x'):($mode&04000?'S':'-'));
$result .= ($mode & 0040?'r':'-');
$result .= ($mode & 0020?'w':'-');
$result .= ($mode & 0010?($mode&02000?'s':'x'):($mode&02000?'S':'-'));
$result .= ($mode & 0004?'r':'-');
$result .= ($mode & 0002?'w':'-');
$result .= ($mode & 0001?($mode&01000?'t':'x'):($mode&01000?'T':'-'));
$result .= ' ';
$result .= (getpwuid($uid)||$uid);
$result .= '.';
$result .= (getgrgid($gid)||$gid);
$result .= "\n";
return $result;
}
sub mimetype {
my $fn = shift;
return "Minode/directory\n" if -d $fn;
pipe(IN,OUT);
my $pid = fork();
return '' if (!defined $pid);
if ($pid) {
close(OUT);
my $type = <IN>;
close(IN);
chomp $type;
chomp $type;
$type =~ s/[,; ].*//;
return '' if ($type !~ m/\//);
return "M$type\n"
}
close(IN);
sysopen(NULL,'/dev/null',O_RDWR);
dup2(fileno(NULL),fileno(STDIN));
dup2(fileno(OUT),fileno(STDOUT));
dup2(fileno(NULL),fileno(STDERR));
exec('/usr/bin/file','-i','-b','-L',$fn);
exit(0);
}
__END__