On Tuesday 08 December 2009 9:50:57 am Adam Jimerson wrote:
> On Dec 7, 12:43 pm, g...@lazymountain.com (Greg Jetter) wrote:
> > On Sunday 06 December 2009 10:24:31 am Adam Jimerson wrote:
> > > I am working on a registration page and there for want it to show the
> > > user errors it has found with their input. I have two subroutines in
> > > my code, the first one prints out the form, also takes an array with
> > > error descriptions that is passed by the other subroutine. The other
> > > subroutine takes the user input and verifies it, any errors that it
> > > finds it pushes into an array called @errors and passes that back to
> > > the first subroutine. The problem is it doesn't work right when I
> > > run it from the command line this is what I get:
> > >
> > > vend...@seserver:~/public_html/AmeriVista> perl -cT register.cgi
> > > [Sun Dec 6 14:12:12 2009] register.cgi: Illegal character in
> > > prototype for main::form_verify : @user at register.cgi line 43.
> > > [Sun Dec 6 14:12:12 2009] register.cgi: Scalar found where operator
> > > expected at register.cgi line 93, near "$user"
> > > [Sun Dec 6 14:12:12 2009] register.cgi: (Missing semicolon on
> > > previous line?)
> > > [Sun Dec 6 14:12:12 2009] register.cgi: main::form_verify() called
> > > too early to check prototype at register.cgi line 36.
> > > Content-type: text/html
> > >
> > > <h1>Software error:</h1>
> > > <pre>syntax error at register.cgi line 93, near "$user"
> > > Global symbol "$GoodMail" requires explicit package name at
> > > register.cgi line 93.
> > > register.cgi had compilation errors.
> > > </pre>
> > > <p>
> > > For help, please send mail to this site's webmaster, giving this error
> > > message
> > > and the time and date of the error.
> > >
> > > </p>
> > > [Sun Dec 6 14:12:12 2009] register.cgi: syntax error at register.cgi
> > > line 93, near "$user"
> > > [Sun Dec 6 14:12:12 2009] register.cgi: Global symbol "$GoodMail"
> > > requires explicit package name at register.cgi line 93.
> > > [Sun Dec 6 14:12:12 2009] register.cgi: register.cgi had compilation
> > > errors.
> > >
> > > I have attached my code for the script, if someone could look at it
> > > and give some ideas as to how to make this work or a better way then
> > > please do
> >
> > You are trying to use a local scoped var as a global , line 93 $GoodMail
> > is used out of its scope ,
> >
> > if ( $user[5] =~ /^([...@\w.]+)$/ ) {
> > $user[5] = $1;
> > eval {
> > my $GoodMail = Email::Valid->address( -address =>
> > "$user[5]", -mxcheck => 1);
> > return;
> > }
> > #push @errors, "<p>Error: Double check your email
> > address</p>" if $@; $user[5] = $GoodMail;
> > }
> >
> > it should read
> >
> > if ( $user[5] =~ /^([...@\w.]+)$/ ) {
> > my $GoodMail ;
> > $user[5] = $1;
> > eval {
> > $GoodMail = Email::Valid->address( -address =>
> > "$user[5]", -mxcheck => 1); return;
> > }
> > #push @errors, "<p>Error: Double check your email
> > address</p>" if $@; $user[5] = $GoodMail;
> > }
> >
> > or even declare it up with the other globals if you want , but the way
> > you have it now it is out of scope after that eval { } block completes.
> >
> > there may be other errors , fix that one first and try it again and see
> > what else pops up.
> >
> > have fun
> >
> > Greg
>
> Ok well I have corrected a couple more errors with the script and it
> now has no errors during compile and runs until it goes to report
> problems it has found back to the user:
>
> #!/usr/bin/perl -T
> use warnings;
> use strict;
> use diagnostics;
> use CGI qw(:standard);
> use DBI;
> use Email::Valid;
> BEGIN {
> $|=1;
> use CGI::Carp('fatalsToBrowser');
> }
> delete @ENV { 'IFS', 'CDPATH', 'ENV', 'BASH_ENV'};
>
> my @user; #Here @user deals with: first name, last name, username,
> password, CLSCC Email, and Student Number
> my @errors;
> my $dbh;
>
> sub db_connect {
> use constant username => 'secret';
> use constant password => 'secret';
> my $database = 'database name';
> my $server = 'localhost';
> my $dsn = "DBI:mysql:database=$database;host=$server;port=3306" ||
> die "Couldn't Connect to the Database: $!";
> my $dbh = DBI->connect($dsn, username, password, {RaiseError
> => 1}) || die "couldn't authenticate to the Database: $!";
> }
>
> db_connect ();
> print header;
> print start_html (-title=>"AmeriVista Event Logging",
> -author=>'vend...@vendion.net');
> print "<h1>Registration Form</h1>\n";
> print "<hr>\n";
>
> if (param) {
> form_verify (@user);
> } else {
> print start_form;
> print_form ();
> print end_form, "\n";
> }
>
> sub form_verify {
> $user[0] = param('FirstName');
> if ( $user[0] =~ /^([-\w.]+)$/ ) {
> $user[0] = $1;
> } else {
> push @errors, "<p>First Names should only contain
> letters</p>\n";
> }
> $user[1] = param('LastName');
> if ( $user[1] =~ /^([...@\w.]+)$/ ) {
> $user[1] = $1;
> } else {
> push @errors, "<p>Last Name Should Only Contain
> Letters</p>\n";
> }
> $user[2] = param('Username');
> if ( $user[2] =~ /^([...@\w.]+)$/ ) {
> $user[2] = $1;
> } else {
> push @errors, "<p>Usernames Should Only Contain
> Letters and Numbers</p>\n";
> }
> $user[3] = param('Password1');
> if ( $user[3] =~ /^([...@\w.]+)$/ ) {
> if ( length ( $user[3] ) eq '6' ) {
> $user[3] = $1;
> if ( length ( $user[3] ) eq '6' ) {
> $user[3] = $1;
> } else {
> push @errors, "<p>The password is to short, it
> should be atleast 6 charaters long</p>\n";
> }
> } else {
> push @errors, "<p>The Password Should only Contain
> alphanumeric characters!\n";;
> }
> $user[4] = param('Password2');
> if ( $user[4] =~ /^([...@\w.]+)$/ ) {
> if ( length ( $user[4] eq '6' ) ) {
> $user[4] = $1;
> } else {
> push @errors, "<p>The Password is to
> Short, it should be at least 6 charaters long</p>\n";
> }
> } else {
> push @errors, "<p>The Password Should only Contain
> alphanumeric characters!\n";
> }
> if ( $user[3] != $user[4] ) {
> push @errors, "<p>Error: Passwords do not match!</p>\n";
> }
> $user[5] = param('Email');
> if ( $user[5] =~ /^([...@\w.]+)$/ ) {
> my $GoodMail;
> $user[5] = $1;
> eval {
> $GoodMail = Email::Valid->address( -address =>
> "$user[5]", -mxcheck => 1);
> return;
> };
> push @errors, "<p>Error: Double check your email
> address</p>\n" if $@;
> $user[5] = $GoodMail;
> } else {
> push @errors, "<p>Incorrect Email given</p>\n";
> }
> $user[6] = param('studentid');
> if ( $user[6] =~ /^([...@.]+)$/ ) {
> $user[6] = $1;
> } else {
> push @errors, "<p>Incorrect studentid given</p>\n";
> }
> push @errors, "<p>Incorrect studentid given</p>\n";
> }
> if ( @errors ) {
> print "Errors found, going back to form\n"; #Debugging
> print_form (@errors);
> } else {
> print "No errors found\n";
> return @user;
> }
> }
>
> sub print_form {
> my @errors = @_;
> print "<div align='center'>\n";
> print "<table width='25%' border=1 summary='Register'>\n";
> print "<td align='left' valign='middle'>\n";
> if ( @errors ) {
> while ( @errors ) {
> print $_, "\n";
> print "<br>\n";
> }
> }
> print "<p>Registration</p>\n";
> }
> print "<p>Registration</p>\n";
> print "<p>First Name: ", textfield(-name=>'FirstName',
> -maxlength=>120), "\n";
> print "<br>\n";
> print "Last Name: ", textfield(-name=>'LastName',
> -maxlength=>120), "\n";
> print "<br>\n";
> print "Username: ", textfield(-name=>'Username',
> -maxlenght=>120), "\n";
> print "<br>\n";
> print "Password: ", password_field(-name=>'Password1',
> -maxlength=>120), "\n";
> print "<br>\n";
> print "Repeat Password: ", password_field(-name=>'Password2',
> -maxlength=>120),
> "\n";
> print "<br>\n";
> print "CLSCC Email: ", textfield(-name=>'Email',
> -maxlenght=>120), "\n";
> print "<br>\n";
> print "Student ID #: N", textfield(-name=>'studentid',
> -maxlength=>120), "</p>";
> print submit(-name=>'Submit_Form',
> -maxlength=>120), "</p>";
> print submit(-name=>'Submit_Form',
> -value=>'Submit');
> print reset, "\n";
> print "</td>\n";
> print "</table>\n";
> print "</div>\n";
> }
>
> Just submitting a blank form is enough to trigger the problem I have
> (see for yourself http://vendion.dyndns.org/cgi-bin/register.cgi), it
> looks like the script stops execution or fails once it hits this block
> of code:
>
> if ( @errors ) {
> while ( @errors ) {
> print $_, "\n";
> print "<br>\n";
> }
> }
>
> According to my browser the page never finishes loading and it starts
> to draw the table but never finishes. I don't know if it is because I
> am handling the @errors array wrong in the print_form() subroutine
> (completely possible, first time doing anything like this in Perl), I
> know it has to be that block of code because I can commit it out and
> everything works smoothly.
start by checking the content of @errors inside the print_form sub.
with a print statement and exit.
Greg
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