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Validate File Upload?

I wish to validate a file upload. That is, I want to only accept a file upload from a customer that fits the "file name" convention I have chosen. I want them not to be able to upload their file, and receive an error message if their file name does not fit the following specs.

1. file name cannot be more than 18 characters(not including the "." and file extention).
2. no upper case
3. no characters other that alfa, numeric, and a max of two underscores.

Here is my "add.cfm" form code. How would I alter it to accommadate my requirements?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<html>
<html>
<head>
<title>DOCUMENT MANAGEMENT TOOL</title>
<STYLE type=text/css>
td.text {COLOR: black; FONT: 10px arial; TEXT-DECORATION: none}
td.titletext {COLOR: black; FONT: 10px arial; font-weight: bold; TEXT-DECORATION: none}
td.pagetitletext {COLOR: white; FONT: 20px arial; TEXT-DECORATION: none}
td.notetext {FONT: 10px arial; TEXT-DECORATION: none}
</STYLE>
</head>

<body bgcolor="steelblue">
<table border="0" width="100%">
<tr>
<td align="center" class="pagetitletext" width="100%">M/F Projects A-D - [ADD - FILE]</td>
</tr>
</table>
<br>
<cfform action="DocumentManagment_action.cfm" method="post" enctype="multipart/form-data">
<input type="hidden" name="datepublished" value="<cfoutput>#DateFormat(Now())#,#TimeFormat(Now())#</cfoutput>">
<table align="center" border="0" width="600" style="border: 2 outset #808080" cellspacing="0" cellpadding="0" bgcolor="#F0F0F0">
<tr>
<td align="right" class="titleTEXT" width="140" bgcolor="#ffffcf">DOC TITLE :  </td>
<td width="450"><cfinput required="yes" message="ENTER IN A TITLE FOR THIS DOCUMENT" type="text" name="DOCUMENTNAME" size="65"></td>
</tr>
<tr>
<td align="right" class="titleTEXT" width="140" bgcolor="#ffffcf">FILE :  </td>
<td width="450"><INPUT type="file" name="UploadedFile" size=30></td>
</tr>
<tr>
<td align="right" class="titleTEXT" width="140" bgcolor="#ffffcf">AUTHOR :  </td>
<td width="450"><cfinput required="yes" message="ENTER IN AN AUTHOR FOR THIS DOCUMENT" type="text" name="AUTHOR" size="65"></td>
</tr>
</table>
<INPUT type="hidden" name="ServerFile">
<BR>
<table width="500" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="250" align="center"><INPUT type="submit" name="btnaddfile_OK" value=" OK "></td>
<td width="250" align="center"><INPUT type="submit" name="BACK" value="Cancel"></td>
</tr>
</table>
</cfform>

</body>
</html>

Moondancer

I WILL REFUND THIS TO YOU....

g118481----> These are your open questions here. Many date back to the year 2000. Help requested, help given and open today.

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_________________________________________
------------> EXPERTS:

Please leave any comments regarding this question here on closing recommendations if this item remains inactive another three days.

Thank you everyone.

Moondancer
Community Support Moderator @ Experts Exchange

P.S. For year 2000 question, special attention is needed to ensure the first correct response is awarded, since they are not in the comment date order, but rather in Member ID order.

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Moondancer

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