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Full Discussion: execute shell script using CGI for html site
Special Forums UNIX and Linux Applications execute shell script using CGI for html site Post 302513889 by DGPickett on Thursday 14th of April 2011 09:32:30 AM
Old 04-14-2011
The base shell and web service are not too compatible, both because shell needs help decoding URLencoded strings and because it is easy to open security holes (shell injection, I guess you could call it) with metacharacters in input. You can do some simple things, especially when the user input is not required, like a report with no inputs and no forms, just information or links.

The rules of CGI are pretty simple, and executables in you cgi-bin subtree will get called by the web server. Scripts may not act like they do interactively, since there is no tty. Basicly, you write to stdout a good http header minus the first line, blank line and whatever document you want, then exit 0. Get input is by env var., and post by read-it-yourself from stdin. There are a handful of support variables. You can see them with this cgi script:
Code:
#!/usr/bin/ksh
 
echo "Content-type:text/plain
 
CGI Environment:
'
 
set 
 
echo '
---- END ----'

Last edited by DGPickett; 04-14-2011 at 10:42 AM..
 

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LEARN ABOUT DEBIAN

apr::request::cgi

CGI(3pm)						User Contributed Perl Documentation						  CGI(3pm)

NAME

       APR::Request::CGI - wrapper for libapreq2's CGI handle.

SYNOPSIS

	 use APR::Request::CGI;
	 my $req = APR::Request::CGI->handle($pool);

DESCRIPTION

       The APR::Request::CGI module provides a constructor for accessing CGI request data associated to a pool via libapreq2.

       This manpage documents version 2.13 of the APR::Request::CGI package.

METHODS

       APR::Request::CGI - derived from "APR::Request".

   handle
	   APR::Request::CGI->handle($pool)

       Creates an APR::Request::CGI object.  The argument $pool is an APR::Pool object.

SEE ALSO

       APR::Request, APR::Pool.

COPYRIGHT

	 Licensed to the Apache Software Foundation (ASF) under one or more
	 contributor license agreements.  See the NOTICE file distributed with
	 this work for additional information regarding copyright ownership.
	 The ASF licenses this file to You under the Apache License, Version 2.0
	 (the "License"); you may not use this file except in compliance with
	 the License.  You may obtain a copy of the License at

	     http://www.apache.org/licenses/LICENSE-2.0

	 Unless required by applicable law or agreed to in writing, software
	 distributed under the License is distributed on an "AS IS" BASIS,
	 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	 See the License for the specific language governing permissions and
	 limitations under the License.

perl v5.10.1							    2011-02-28								  CGI(3pm)
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