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Full Discussion: Perl CGI: No such file and directory: Yet file exists?
Homework and Emergencies Homework & Coursework Questions Perl CGI: No such file and directory: Yet file exists? Post 302931948 by jasondancks on Friday 16th of January 2015 11:36:11 PM
Old 01-17-2015
Perl CGI: No such file and directory: Yet file exists?
This technically a homework problem but I just need help solving this strange issue. The code is kinda long, I tried posted only the relevant parts.

1. The problem statement, all variables and given/known data:

I receive this error:

Code:
got error No such file or directory (2)

at:
Code:
open(GRADES,"<<$grades") or die "got error $! (".($!+0).")\n";

line 49 in CreateExam.pm called from submit.cgi, linked below.

2. Relevant commands, code, scripts, algorithms:
submit.cgi:
Code:
	my $check = CreateExam->new("/var/www/roger/homeworks/hw13/exam4.txt","/var/www/roger/homeworks/hw13/answers4.txt","/var/www/roger/homeworks/hw13/grades4.txt",$pathroot);


CreateExam.pm:

Code:
sub new {
	my ($class,$file,$answers,$grades,$script) = @_;
	#print "<p>in new: file: $file, grades: $grades</p>\n";
	return bless {'file'=>$file,'answers'=>$answers,'gradefile'=>$grades,'script'=>$script},$class;
}

Code:
my $grades = $self->{'gradefile'};
open(GRADES,"<<$grades") or die "got error $! (".($!+0).")\n";

3. The attempts at a solution (include all code and scripts):

I tried all of those recommendations: I remove any whitespace, I put in a check for any nonprintable characters, I hard-coded the path.

To make sure it wasn't a permissions issue, I installed suExec-custom for debian, all cgi scripts run under my UID, that didn't help.

I'm running this on debian with Apache

4. Complete Name of School (University), City (State), Country, Name of Professor, and Course Number (Link to Course):

SUNY Polytechnic, Formerly SUNY Institute of Technology
100 Seymour Rd Utica NY 13502
CS 351 Web Development and Internet Programming
Scott Spetka scott@sunyit.edu
 

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LEARN ABOUT DEBIAN

appconfig::cgi

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

NAME

       AppConfig::CGI - Perl5 module for processing CGI script parameters.

SYNOPSIS

	   use AppConfig::CGI;

	   my $state = AppConfig::State->new(\%cfg);
	   my $cgi   = AppConfig::CGI->new($state);

	   $cgi->parse($cgi_query);
	   $cgi->parse();		# looks for CGI query in environment

OVERVIEW

       AppConfig::CGI is a Perl5 module which implements a CGI interface to AppConfig.	It examines the QUERY_STRING environment variable, or a
       string passed explicitly by parameter, which represents the additional parameters passed to a CGI query.  This is then used to update
       variable values in an AppConfig::State object accordingly.

       AppConfig::CGI is distributed as part of the AppConfig bundle.

DESCRIPTION

   USING THE AppConfig::CGI MODULE
       To import and use the AppConfig::CGI module the following line should appear in your Perl script:

	   use AppConfig::CGI;

       AppConfig::CGI is used automatically if you use the AppConfig module and create an AppConfig::CGI object through the cgi() method.
       AppConfig::CGI is implemented using object-oriented methods.  A new AppConfig::CGI object is created and initialised using the new()
       method.	This returns a reference to a new AppConfig::CGI object.  A reference to an AppConfig::State object should be passed in as the
       first parameter:

	   my $state = AppConfig::State->new();
	   my $cgi   = AppConfig::CGI->new($state);

       This will create and return a reference to a new AppConfig::CGI object.

   PARSING CGI QUERIES
       The "parse()" method is used to parse a CGI query which can be specified explicitly, or is automatically extracted from the "QUERY_STRING"
       CGI environment variable.  This currently limits the module to only supporting the GET method.

       See AppConfig for information about using the AppConfig::CGI module via the cgi() method.

AUTHOR

       Andy Wardley, "<abw@wardley.org<gt">

COPYRIGHT

       Copyright (C) 1997-2007 Andy Wardley.  All Rights Reserved.

       Copyright (C) 1997,1998 Canon Research Centre Europe Ltd.

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

       AppConfig, AppConfig::State

perl v5.12.4							    2007-05-30						       AppConfig::CGI(3pm)
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