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Code snippets: parsing GET or POST data
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The following routine is my standard snippet to parse transmitted data (either GET or POST, not both).
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sub parse_form {
# Get the input
if ($ENV{'REQUEST_METHOD'} eq 'GET') {
# Split the name-value pairs
@pairs = split(/&/, $ENV{'QUERY_STRING'});
}
elsif ($ENV{'REQUEST_METHOD'} eq 'POST') {
# Get the input
read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
# Split the name-value pairs
@pairs = split(/&/, $buffer);
}
foreach $pair (@pairs) {
($name, $value) = split(/=/, $pair);
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;
# If they try to include server side includes, erase them, so they
# arent a security risk if the html gets returned. Another
# security hole plugged up.
$value =~ s/<!--(.|\n)*-->//g;
$FORM{$name} = $value;
}
}
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