Re: Multipart Form - Ascertain File Type
This WebDNA talk-list message is from 2007
It keeps the original formatting.
numero = 68740
interpreted = N
texte = If you have the default install of WebDNA on your server, take a look at the file /admin/upload_multiphotos2.tpl It shows you how to distinguish between a .jpg and a .gif file. I've used that basic file to figure out the file extensions. However be aware that just because the file says it's a .txt does not actually mean it IS a txt. For image validation I sometimes run the .gif or .jpg through ImageMagic. If a real image is created then it was an image file. But if this is an open form for all web visitor you will have to test the validity somehow. If this is for your customers, well, you *should* be able to trust them, right? -- Matthew A Perosi Psi Prime, Inc. http://www.psiprime.com 323 Union Blvd. Totowa, NJ 07512 P: 973.225.9870 F: 973.413.8217 Tana Adams wrote: >Hi, > >I was wondering if anyone knew how to ascertain what type of file was being >uploaded when using a multipart form. I'm trying to create a file upload >that will only allow a .txt file to be uploaded. I've tried to ascertain >the file type coming in using the formvariables context but it doesn't seem >to work. The form works fine...files uploading without problem. Does >anyone have any ideas? > >Thank you, > >Tana > > >------------------------------------------------------------- >This message is sent to you because you are subscribed to > the mailing list
. >To unsubscribe, E-mail to: >To switch to the DIGEST mode, E-mail to >Web Archive of this list is at: http://webdna.smithmicro.com/ > > > > ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
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If you have the default install of WebDNA on your server, take a look at the file /admin/upload_multiphotos2.tpl It shows you how to distinguish between a .jpg and a .gif file. I've used that basic file to figure out the file extensions. However be aware that just because the file says it's a .txt does not actually mean it IS a txt. For image validation I sometimes run the .gif or .jpg through ImageMagic. If a real image is created then it was an image file. But if this is an open form for all web visitor you will have to test the validity somehow. If this is for your customers, well, you *should* be able to trust them, right? -- Matthew A Perosi Psi Prime, Inc. http://www.psiprime.com 323 Union Blvd. Totowa, NJ 07512 P: 973.225.9870 F: 973.413.8217 Tana Adams wrote: >Hi, > >I was wondering if anyone knew how to ascertain what type of file was being >uploaded when using a multipart form. I'm trying to create a file upload >that will only allow a .txt file to be uploaded. I've tried to ascertain >the file type coming in using the formvariables context but it doesn't seem >to work. The form works fine...files uploading without problem. Does >anyone have any ideas? > >Thank you, > >Tana > > >------------------------------------------------------------- >This message is sent to you because you are subscribed to > the mailing list . >To unsubscribe, E-mail to: >To switch to the DIGEST mode, E-mail to >Web Archive of this list is at: http://webdna.smithmicro.com/ > > > > ------------------------------------------------------------- This message is sent to you because you are subscribed to the mailing list . To unsubscribe, E-mail to: To switch to the DIGEST mode, E-mail to Web Archive of this list is at: http://webdna.smithmicro.com/
Matthew A Perosi
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