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_setup.1
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book.pl
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1997-05-19
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#
# Sample CGI/1.1 Perl Guestbook
#
# In the event of a failure, anything written to stderr can
# be found in the "tmp" directory.
$bookfile = "../docs/samples/book.htm";
# Get the input
read(STDIN, $data, $ENV{'CONTENT_LENGTH'});
# Split the name-value pairs
@pairs = split(/&/, $data);
foreach $pair (@pairs)
{
($name, $value) = split(/=/, $pair);
# Convert the HTML encoding
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
$value =~ s/<!--(.|\n)*-->//g;
# Convert HTML stuff as necessary.
$value =~ s/<([^>]|\n)*>//g;
$FORM{$name} = $value;
}
# Verify that the required data has been received.
&missing_name unless $FORM{'name'};
&missing_msg unless $FORM{'msg'};
# Read in the book for editing
# Note: These actions on the book file should be atomic (flock()).
open (FILE, "$bookfile") || die "Can't open $bookfile: $!\n";
@LINES=<FILE>;
close(FILE);
$SIZE=@LINES;
# Open book file
open (FILE, ">$bookfile") || die "Can't open $bookfile: $!\n";
for ($i = 0; $i <= $SIZE; $i++)
{
$_=$LINES[$i];
if (/<!--top-->/)
{
print FILE "<!--top-->\n";
print FILE "<b>$FORM{'msg'}</b><br>\n";
print FILE "$FORM{'name'}";
if ($FORM{'email'})
{
print FILE " \<<A HREF=\"mailto:$FORM{'email'}\">";
print FILE "$FORM{'email'}</A>\>";
}
print FILE "<HR>\n";
}
else
{
print FILE $_;
}
}
close (FILE);
# Response message.
print "<HTML><HEAD><TITLE>Thanks</TITLE></HEAD><BODY bgcolor=white>\n";
print "<FONT SIZE=5 COLOR=#996633><B>Thanks for your message</B></FONT>\n";
print "<BR><BR>Your entry has been added to our guest book:<HR>\n";
print "<b>$FORM{'msg'}</b><br>\n";
print "$FORM{'name'}";
if ($FORM{'email'})
{
print " <<A HREF=\"mailto:$FORM{'email'}\">";
print "$FORM{'email'}</A>>";
}
print "<P><HR>\n";
print "<A HREF=\"/samples/index.htm\">Back to samples page.</A>\n";
print "</BODY></HTML>\n";
exit;
sub missing_name
{
print "<HTML><HEAD><TITLE>Missing Name</TITLE></HEAD><BODY>\n";
print "<FONT SIZE=5 COLOR=#996633><B>Name field is blank...</B></FONT>\n";
print "<BR><BR>Please repost the name section of the guestbook.<P>\n";
print "Return to the <a href=\"/samples/book.htm\">Guest Book</a>.\n";
print "</BODY></HTML>\n";
exit;
}
sub missing_msg
{
print "<HTML><HEAD><TITLE>Missing Comments</TITLE></HEAD>\n";
print "<FONT SIZE=5 COLOR=#996633><B>Comment field is blank...</B></FONT>\n";
print "<BR><BR>Please repost the comment section of the guestbook.<P>\n";
print "Return to the <a href=\"/samples/book.htm\">Guest Book</a>.\n";
print "</BODY></HTML>\n";
exit;
}