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FAQ 9.14 How do I make sure users can't enter values into a form that cause my CGI script to do bad things?

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Subject Author Date
FAQ 9.14 How do I make sure users can't enter values into a form that cause my CGI script to do bad things? PerlFAQ Server 02-16-2006
Posted by PerlFAQ Server on February 16, 2006, 12:03 pm
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>>
>> [snip]
>>
>> > if I print "$1\n",
>> > the file prints just fine. But, if I do something like print "$1 after
>> > \n", the whole output is messed up. If I print "before $1\n", nothing
>> > prints at all. If I print "before $1 after\n", only after prints.
>>
>> not really sure, but could be a rogue "\r" in $1,


> There
> is a rogue carriage return (0xd) in the string

> Is there something I can do to deal with this
> situation?


Repair the corrupted file:

perl -p -i -e 'tr/\r//d' bad_file


--
Tad McClellan SGML consulting
tadmc@augustmail.com Perl programming
Fort Worth, Texas

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