Is it the code or the browser

Question

i don't use this application often, but it has worked previously within the last month.  However now my cffile is ALWAYS translating mime type to "application/x-itunes-itlp" even though it is sometimes a pdf, sometimes a word doc, sometimes an excel file etc.
My <form> tag has enctype="multipart/form-data"
The error is being thrown on the following line of code:
<cffile action="upload" fileField="docUpload" destination="#dirPath#" nameConflict="overwrite" result="fileUpload" accept="application/vnd.ms-word, application/msword, application/vnd.ms-powerpoint, text/plain, application/x-pdf, application/pdf, application/vnd.wordperfect, application/vnd.ms-excel, application/zip, application/x-zip, application/x-zip-compressed, application/octet-stream, application/x-compress, application/x-compressed, multipart/x-zip">
and the error, no matter what file so far (except text files) is:
The MIME type of the uploaded file application/x-itunes-itlp was not accepted by the server.
My question: who decides what mime type a file has?  is it the browser or the cffile tag?  If it's the browser, which i'm starting to suspect, is it something i can change in my own browser? (I have both firefox 3.5.7 and IE 6) if it's the cffile tag, can i change how it behaves?

Answer 1

OK.  So i never found a good solution, although Adam's suggestions help find the problem, the solution may not be within my means, what i did find out was that  every file uploaded from this machine (and this machine only) to any server running my code is being identified at some point as an itunes/ipl file.  I'll be glad to find out where the problem was as i checked this computer's registry and it appeared to be correct, but didn't know how to see whether it was the browser or the server after that.
I removed "accept" from the call and then ran the following code (which modifies the structure created by cf, see my note above) if the file extension matched my pre-arranged set of file extensions and threw an error if it did not (I did this is because i'm actually storing the mime type for when i output it, not because a filter that rejects by file extension didn't work for me)
NOTE: macintosh and unix users may encounter issues because of this code on files without extensions.  But they would have trouble with most  measures as they are all based on file extension and thankfully, all of my admin users uploading documents are inside my firewall and i know they have windows pcs.
Code: (note fileUpload is the variable created by cffile)
<cfif fileUpload.clientFileExt eq "doc" and fileUpload.CONTENTSUBTYPE NEQ "msword">
    <cfset fileUpload.CONTENTSUBTYPE = "msword">
    <cfif fileUpload.contenttype neq "application">
         <cfset fileUpload.contenttype = "application">
    </cfif>
</cfif>
<cfif fileUpload.clientFileExt eq "ppt" and fileUpload.CONTENTSUBTYPE NEQ "vnd.ms-powerpoint">
    <cfset fileUpload.CONTENTSUBTYPE = "vnd.ms-powerpoint">
    <cfif fileupload.contenttype neq "application">
          <cfset fileUpload.contenttype = "application">
    </cfif>
</cfif>
<cfif fileUpload.clientFileExt eq "txt" and fileUpload.CONTENTSUBTYPE NEQ "plain">
     <cfset fileUpload.CONTENTSUBTYPE = "plain">
     <cfif fileupload.contenttype neq "text">
          <cfset fileUpload.contenttype = "text">
     </cfif>
</cfif>
<cfif fileUpload.clientFileExt eq "pdf" and fileUpload.CONTENTSUBTYPE NEQ "pdf">
      <cfset fileUpload.CONTENTSUBTYPE = "pdf">
      <cfif fileupload.contenttype neq "application">
          <cfset fileUpload.contenttype = "application">
       </cfif>
</cfif>
<cfif fileUpload.clientFileExt eq "wpd" and fileUpload.CONTENTSUBTYPE NEQ "wordperfect">
       <cfset fileUpload.CONTENTSUBTYPE = "wordperfect">
       <cfif fileupload.contenttype neq "application">
           <cfset fileUpload.contenttype = "application">
       </cfif>
</cfif>
<cfif fileUpload.clientFileExt eq "xls" and fileUpload.CONTENTSUBTYPE NEQ "vnd.ms-excel">
       <cfset fileUpload.CONTENTSUBTYPE = "vnd.ms-excel">
       <cfif fileupload.contenttype neq "application">
            <cfset fileUpload.contenttype = "application">
       </cfif>
</cfif>
<cfif fileUpload.clientFileExt eq "zip" and fileUpload.CONTENTSUBTYPE NEQ "zip">
        <cfset fileUpload.CONTENTSUBTYPE = "zip">
        <cfif fileupload.contenttype neq "application">
              <cfset fileUpload.contenttype = "application">
        </cfif>
</cfif>
<cfif fileUpload.contentsubtype eq "x-itunes-itlp">
       <cfset fileupload.contentsubtype = "octet-stream">
</cfif>
The final if is effectively a catch all for this specific problem which was that it was returning "application/x-itunes-itlp", and so if going through all that stuff on code with the proper file extensions doesn't work, then there's a bug in this code, it is, however, not the best way to handle it, and i hope to have time next week to follow Adam's advice and follow up WHERE the type is being modified.
Adam, can you point to a resource explaining how to use JWS to upload files? I'm still new to the java underbelly.