07-23-2016
Bash scripts - CGI and ssh
Hi Everyone,
I started looking at the possibility of making some of our bash scripts available through a web server using CGI and the simple ones works just fine. Now I need to execute remote commands using ssh but can't really get it to work. I got private keys all sorted. Must be ssh having issues handling stdin/stdout. Please any advise will be highly appreciated.
regards,
HA.....
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi everyone, I need help with writing a script that does the following:
a client/user goes onto my website, hits a link, it would pop up either
1. user name and password
2. password and directory name
and then after they enter the required info, it would take them to their own folder. So... (6 Replies)
Discussion started by: crazycelicagts
6 Replies
2. Programming
I need to create a webserver to run Perl CGI Scripts. Anyone have any ideas or good links?
Yes I know there are lovely programs out there, but I need to build one in C.
Thanks! (1 Reply)
Discussion started by: cb.mark
1 Replies
3. Shell Programming and Scripting
Hi, is it possible to create a CGI folder somewhere on the server and allow all domains on that server be able to access the scripts? I tried a ScriptAlias addition in httpd.conf but still no luck. Would greatly appreciate any tips! Thanks.
Linux version 2.4.20-021stab028.3.777-enterprise
Plesk... (1 Reply)
Discussion started by: karlsworld
1 Replies
4. UNIX for Dummies Questions & Answers
Hi, is it possible to create a CGI folder somewhere on the server and allow all domains on that server be able to access the scripts? I tried a ScriptAlias addition in httpd.conf but still no luck. Would greatly appreciate any tips! Thanks.
Linux version 2.4.20-021stab028.3.777-enterprise
Plesk... (5 Replies)
Discussion started by: karlsworld
5 Replies
5. Web Development
Hi,
I am trying to create a web interface with Perl CGI with 2 pages. The content of these pages is dependent on the user accessing it. Thus, I need some kind of authentication to identify WHO is logging in but I DO NOT WANT to be restricting the pages to a few.
What is the best way to prompt... (8 Replies)
Discussion started by: garric
8 Replies
6. Shell Programming and Scripting
Hi,
I am having nightmare issue-ing remote ssh command from a CGI perl script.
It just won't run on debug message: It says permission denied. Can I even do this? as the apache server running under DAEMON account probably can't execute it? Is this the case of what's going on?
Here is my... (3 Replies)
Discussion started by: Dabheeruz
3 Replies
7. Shell Programming and Scripting
Hi,
I have to write a program to compute the checksums of files
./script.sh
I wrote the program using bash and it took me forever since I am a beginner but it works very well.
I'm getting so close to the deadline and I realised today that actually I have to use normal Bourne shell... (3 Replies)
Discussion started by: pgarg1989
3 Replies
8. Shell Programming and Scripting
Hi!
Some minutes ago I've posted a question related with sed regexps because I need to catch information sended with forms with GET action. This is the post: https://www.unix.com/shell-programming-scripting/127800-regular-expression-sed.html
But now I have a new question. Does cgi scripts have... (0 Replies)
Discussion started by: GagleKas
0 Replies
9. Programming
Hi All,
I have designed a web tool in perl cgi in UNIX Solaris 10 platform.
According to my cgi script (in server A) it should execute a script (in server B) using ssh key authentication, but it is not.
And when I am trying to execute the command without cgi script, the script in server B... (4 Replies)
Discussion started by: ankit_talwar
4 Replies
10. UNIX for Advanced & Expert Users
Hi Friends,
I am using a cgi script which calls a shell script internally. Now, I want to change it with ssh (without password). Can you please help?
Code:cat maininfo.cgi
#!/usr/bin/perl -w
use Net::Telnet ();
use CGI qw(:standard);
use CGI::Carp qw(warningsToBrowser... (1 Reply)
Discussion started by: suresh3566
1 Replies
LEARN ABOUT MOJAVE
cgi::fast
CGI::Fast(3pm) Perl Programmers Reference Guide CGI::Fast(3pm)
NAME
CGI::Fast - CGI Interface for Fast CGI
SYNOPSIS
use CGI::Fast qw(:standard);
$COUNTER = 0;
while (new CGI::Fast) {
print header;
print start_html("Fast CGI Rocks");
print
h1("Fast CGI Rocks"),
"Invocation number ",b($COUNTER++),
" PID ",b($$),".",
hr;
print end_html;
}
DESCRIPTION
CGI::Fast is a subclass of the CGI object created by CGI.pm. It is specialized to work well FCGI module, which greatly speeds up CGI
scripts by turning them into persistently running server processes. Scripts that perform time-consuming initialization processes, such as
loading large modules or opening persistent database connections, will see large performance improvements.
OTHER PIECES OF THE PUZZLE
In order to use CGI::Fast you'll need the FCGI module. See http://www.cpan.org/ for details.
WRITING FASTCGI PERL SCRIPTS
FastCGI scripts are persistent: one or more copies of the script are started up when the server initializes, and stay around until the
server exits or they die a natural death. After performing whatever one-time initialization it needs, the script enters a loop waiting for
incoming connections, processing the request, and waiting some more.
A typical FastCGI script will look like this:
#!/usr/bin/perl
use CGI::Fast;
&do_some_initialization();
while ($q = new CGI::Fast) {
&process_request($q);
}
Each time there's a new request, CGI::Fast returns a CGI object to your loop. The rest of the time your script waits in the call to new().
When the server requests that your script be terminated, new() will return undef. You can of course exit earlier if you choose. A new
version of the script will be respawned to take its place (this may be necessary in order to avoid Perl memory leaks in long-running
scripts).
CGI.pm's default CGI object mode also works. Just modify the loop this way:
while (new CGI::Fast) {
&process_request;
}
Calls to header(), start_form(), etc. will all operate on the current request.
INSTALLING FASTCGI SCRIPTS
See the FastCGI developer's kit documentation for full details. On the Apache server, the following line must be added to srm.conf:
AddType application/x-httpd-fcgi .fcgi
FastCGI scripts must end in the extension .fcgi. For each script you install, you must add something like the following to srm.conf:
FastCgiServer /usr/etc/httpd/fcgi-bin/file_upload.fcgi -processes 2
This instructs Apache to launch two copies of file_upload.fcgi at startup time.
USING FASTCGI SCRIPTS AS CGI SCRIPTS
Any script that works correctly as a FastCGI script will also work correctly when installed as a vanilla CGI script. However it will not
see any performance benefit.
EXTERNAL FASTCGI SERVER INVOCATION
FastCGI supports a TCP/IP transport mechanism which allows FastCGI scripts to run external to the webserver, perhaps on a remote machine.
To configure the webserver to connect to an external FastCGI server, you would add the following to your srm.conf:
FastCgiExternalServer /usr/etc/httpd/fcgi-bin/file_upload.fcgi -host sputnik:8888
Two environment variables affect how the "CGI::Fast" object is created, allowing "CGI::Fast" to be used as an external FastCGI server.
(See "FCGI" documentation for "FCGI::OpenSocket" for more information.)
FCGI_SOCKET_PATH
The address (TCP/IP) or path (UNIX Domain) of the socket the external FastCGI script to which bind an listen for incoming connections
from the web server.
FCGI_LISTEN_QUEUE
Maximum length of the queue of pending connections.
For example:
#!/usr/local/bin/perl # must be a FastCGI version of perl!
use CGI::Fast;
&do_some_initialization();
$ENV{FCGI_SOCKET_PATH} = "sputnik:8888";
$ENV{FCGI_LISTEN_QUEUE} = 100;
while ($q = new CGI::Fast) {
&process_request($q);
}
CAVEATS
I haven't tested this very much.
AUTHOR INFORMATION
Copyright 1996-1998, Lincoln D. Stein. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
Address bug reports and comments to: lstein@cshl.org
BUGS
This section intentionally left blank.
SEE ALSO
CGI::Carp, CGI
perl v5.18.2 2014-01-06 CGI::Fast(3pm)