RE: Uploading zero-length files
What are the other attributes to cgi that can be used? Is ther one for the file name? Is this in any of the CF books out there? Brian -Original Message- From: Greg Luce [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 26, 2002 9:37 AM To: CF-Talk Subject: RE: Uploading zero-length files I've done this: because someone told me about some 1 byte gif or something that causes ddamage. Also to limit huge files. -Original Message- From: jgeorges [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 26, 2002 10:21 AM To: CF-Talk Subject: Uploading zero-length files I am uploading a file (that the user has identified in an input type=file) using CFFILE. CFFILE does not allow zero length files. Is there a way I can get the filesize before attempting the upload? TIA, Sam Changed your e-mail? Keep your contacts! Use this free e-mail change of address service from Return Path. Register now! __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Uploading zero-length files
Ahh... thanks Jochem, that's really informative... > Greg Luce wrote: >> Isaac, >> I noticed that the content_length variable wasn't >> exactly the >> size of the uploaded file, but close. I was thinking it >> must also >> included the rest of the form data. Could that be? I >> think if the form >> didn't have a lot of inputs the difference was less than >> 1K so it was >> good enough to restrict files over like 100K or less than >> 2K. > I would expect size differences to originate from a > possible encoding of > the uploaded file, which in turn makes me believe that the > Content-Length >= file size. > > 14.13 Content-Length > The Content-Length entity-header field indicates the > size of the > entity-body, in decimal number of OCTETs, sent to the > recipient or, > in the case of the HEAD method, the size of the > entity-body that > would have been sent had the request been a GET. > Content-Length= "Content-Length" ":" 1*DIGIT > An example is > Content-Length: 3495 > Applications SHOULD use this field to indicate the > transfer-length of > the message-body, unless this is prohibited by the > rules in section > 4.4. > Any Content-Length greater than or equal to zero is a > valid value. > Section 4.4 describes how to determine the length of a > message-body > if a Content-Length is not given. > Note that the meaning of this field is significantly > different from > the corresponding definition in MIME, where it is an > optional field > used within the "message/external-body" content-type. > In HTTP, it > SHOULD be sent whenever the message's length can be > determined prior > to being transferred, unless this is prohibited by the > rules in > section 4.4. > RFC 2616, HTTP/1.1 Isaac Certified Advanced ColdFusion 5 Developer www.turnkey.to 954-776-0046 __ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
That's what I would expect ... My cms only takes in one file at a time and there aren't any other inputs on that form, which would make restricting those file sizes fairly easy. :) On a form with a bunch of textareas would be a whole other ballgame... Textareas are great ... You specify on the form "200 characters" so they copy and paste in a 3000 word resume. :) > Isaac, > I noticed that the content_length variable wasn't exactly > the > size of the uploaded file, but close. I was thinking it > must also > included the rest of the form data. Could that be? I think > if the form > didn't have a lot of inputs the difference was less than > 1K so it was > good enough to restrict files over like 100K or less than > 2K. > Greg Isaac Certified Advanced ColdFusion 5 Developer www.turnkey.to 954-776-0046 __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Uploading zero-length files
I have been using IE 5.5 SP2, same behavior with Netscape 4.79 Sam --- On Thu 09/26, S.Isaac Dealey wrote: From: S.Isaac Dealey [mailto: [EMAIL PROTECTED]] To: [EMAIL PROTECTED] Date: Thu, 26 Sep 2002 17:59:48 -0400 Subject: Re: Uploading zero-length files > That's interresting... I wonder if that's a browser specific behavior... > Thanks for the info, I'll have to check it out. > > > Isaac, > > > Thanks for the response. > > > Both content_length and http_content_length returned a > > non-zero value. What I noticed is the filename does not > > get passed for zero length files. So testing for the > > existence of a filename solved my problem. > > > Sam > > > > > --- On Thu 09/26, S.Isaac Dealey wrote: > > From: S.Isaac Dealey [mailto: [EMAIL PROTECTED]] > > To: [EMAIL PROTECTED] > > Date: Thu, 26 Sep 2002 10:54:02 -0400 > > Subject: Re: Uploading zero-length files > > >> I think there are a couple cgi variables you can use to > >> estimate it... > >> cgi.content_length or maybe http_content_length ... not > >> sure... If you > >> have > >> debugging turned on on the server, upload a file and then > >> look at the > >> list > >> of cgi variables at the bottom of the page, the 1 or 2 > >> you want should be > >> fairly easy to spot. > >> > >> > I am uploading a file (that the user has identified in > >> > an input > >> type=file) > >> > using CFFILE. CFFILE does not allow zero length files. > >> > >> > Is there a way I can get the filesize before attempting > >> > the upload? > >> > >> > >> S. Isaac Dealey > >> Certified Advanced ColdFusion 5 Developer > >> > >> www.turnkey.to > >> 954-776-0046 > >> > > __ > > > > Get the mailserver that powers this list at > > http://www.coolfusion.com > > FAQ: http://www.thenetprofits.co.uk/coldfusion/faq > > Archives: > > http://www.mail-archive.com/cf-talk@houseoffusion.com/ > > Unsubscribe: > > http://www.houseoffusion.com/index.cfm?sidebar=lists > > > Isaac > Certified Advanced ColdFusion 5 Developer > > www.turnkey.to > 954-776-0046 > > __ Signup for the Fusion Authority news alert and keep up with the latest news in ColdFusion and related topics. http://www.fusionauthority.com/signup.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Uploading zero-length files
Greg Luce wrote: > Isaac, > I noticed that the content_length variable wasn't exactly the > size of the uploaded file, but close. I was thinking it must also > included the rest of the form data. Could that be? I think if the form > didn't have a lot of inputs the difference was less than 1K so it was > good enough to restrict files over like 100K or less than 2K. I would expect size differences to originate from a possible encoding of the uploaded file, which in turn makes me believe that the Content-Length >= file size. 14.13 Content-Length The Content-Length entity-header field indicates the size of the entity-body, in decimal number of OCTETs, sent to the recipient or, in the case of the HEAD method, the size of the entity-body that would have been sent had the request been a GET. Content-Length= "Content-Length" ":" 1*DIGIT An example is Content-Length: 3495 Applications SHOULD use this field to indicate the transfer-length of the message-body, unless this is prohibited by the rules in section 4.4. Any Content-Length greater than or equal to zero is a valid value. Section 4.4 describes how to determine the length of a message-body if a Content-Length is not given. Note that the meaning of this field is significantly different from the corresponding definition in MIME, where it is an optional field used within the "message/external-body" content-type. In HTTP, it SHOULD be sent whenever the message's length can be determined prior to being transferred, unless this is prohibited by the rules in section 4.4. RFC 2616, HTTP/1.1 Jochem __ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
Isaac, I noticed that the content_length variable wasn't exactly the size of the uploaded file, but close. I was thinking it must also included the rest of the form data. Could that be? I think if the form didn't have a lot of inputs the difference was less than 1K so it was good enough to restrict files over like 100K or less than 2K. Greg -Original Message- From: S. Isaac Dealey [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 26, 2002 6:00 PM To: CF-Talk Subject: Re: Uploading zero-length files That's interresting... I wonder if that's a browser specific behavior... Thanks for the info, I'll have to check it out. > Isaac, > Thanks for the response. > Both content_length and http_content_length returned a > non-zero value. What I noticed is the filename does not > get passed for zero length files. So testing for the > existence of a filename solved my problem. > Sam > --- On Thu 09/26, S.Isaac Dealey wrote: > From: S.Isaac Dealey [mailto: [EMAIL PROTECTED]] > To: [EMAIL PROTECTED] > Date: Thu, 26 Sep 2002 10:54:02 -0400 > Subject: Re: Uploading zero-length files >> I think there are a couple cgi variables you can use to >> estimate it... >> cgi.content_length or maybe http_content_length ... not >> sure... If you >> have >> debugging turned on on the server, upload a file and then >> look at the >> list >> of cgi variables at the bottom of the page, the 1 or 2 >> you want should be >> fairly easy to spot. >> >> > I am uploading a file (that the user has identified in >> > an input >> type=file) >> > using CFFILE. CFFILE does not allow zero length files. >> >> > Is there a way I can get the filesize before attempting >> > the upload? >> >> >> S. Isaac Dealey >> Certified Advanced ColdFusion 5 Developer >> >> www.turnkey.to >> 954-776-0046 >> > __ > > Get the mailserver that powers this list at > http://www.coolfusion.com > FAQ: http://www.thenetprofits.co.uk/coldfusion/faq > Archives: > http://www.mail-archive.com/cf-talk@houseoffusion.com/ > Unsubscribe: > http://www.houseoffusion.com/index.cfm?sidebar=lists Isaac Certified Advanced ColdFusion 5 Developer www.turnkey.to 954-776-0046 __ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
Nat, Thanks for the response. Sam --- On Thu 09/26, Nat Papovich wrote: From: Nat Papovich [mailto: [EMAIL PROTECTED]] To: [EMAIL PROTECTED] Date: Thu, 26 Sep 2002 10:26:17 -0700 Subject: RE: Uploading zero-length files > If all you want to do is avoid errors caused by uploaded zero-length > files, > you might try wrapping the upload in cftry/cfcatch. > > NAT > > > -Original Message- > > From: Chris Lofback [mailto:[EMAIL PROTECTED]] > > Sent: Thursday, September 26, 2002 8:45 AM > > To: CF-Talk > > Subject: RE: Uploading zero-length files > > > > > > Unless you go to a Java applet (or something similar), I don't > > think there's > > a way to get the file size info at the client end before uploading. > The > > FileUpload form field doesn't provide file size and JavaScript > > can't get any > > info about files on the client system. > > > > Chris Lofback > > Sr. Web Developer > > > > TRX Integration > > 28051 US 19 N., Ste. C > > Clearwater, FL 33761 > > www.trxi.com > > > > > > > -Original Message- > > > From: jgeorges [mailto:[EMAIL PROTECTED]] > > > Sent: Thursday, September 26, 2002 10:21 AM > > > To: CF-Talk > > > Subject: Uploading zero-length files > > > > > > > > > I am uploading a file (that the user has identified in an > > > input type=file) using CFFILE. CFFILE does not allow zero > > > length files. > > > > > > Is there a way I can get the filesize before attempting the > upload? > > > > > > TIA, > > > > > > Sam > > > > > > > > > > > > > > > > > > Changed your e-mail? Keep your contacts! Use this free > > > e-mail change of address service from Return Path. Register > now! > > > > > > __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Uploading zero-length files
That's interresting... I wonder if that's a browser specific behavior... Thanks for the info, I'll have to check it out. > Isaac, > Thanks for the response. > Both content_length and http_content_length returned a > non-zero value. What I noticed is the filename does not > get passed for zero length files. So testing for the > existence of a filename solved my problem. > Sam > --- On Thu 09/26, S.Isaac Dealey wrote: > From: S.Isaac Dealey [mailto: [EMAIL PROTECTED]] > To: [EMAIL PROTECTED] > Date: Thu, 26 Sep 2002 10:54:02 -0400 > Subject: Re: Uploading zero-length files >> I think there are a couple cgi variables you can use to >> estimate it... >> cgi.content_length or maybe http_content_length ... not >> sure... If you >> have >> debugging turned on on the server, upload a file and then >> look at the >> list >> of cgi variables at the bottom of the page, the 1 or 2 >> you want should be >> fairly easy to spot. >> >> > I am uploading a file (that the user has identified in >> > an input >> type=file) >> > using CFFILE. CFFILE does not allow zero length files. >> >> > Is there a way I can get the filesize before attempting >> > the upload? >> >> >> S. Isaac Dealey >> Certified Advanced ColdFusion 5 Developer >> >> www.turnkey.to >> 954-776-0046 >> > __ > > Get the mailserver that powers this list at > http://www.coolfusion.com > FAQ: http://www.thenetprofits.co.uk/coldfusion/faq > Archives: > http://www.mail-archive.com/cf-talk@houseoffusion.com/ > Unsubscribe: > http://www.houseoffusion.com/index.cfm?sidebar=lists Isaac Certified Advanced ColdFusion 5 Developer www.turnkey.to 954-776-0046 __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
If all you want to do is avoid errors caused by uploaded zero-length files, you might try wrapping the upload in cftry/cfcatch. NAT > -Original Message- > From: Chris Lofback [mailto:[EMAIL PROTECTED]] > Sent: Thursday, September 26, 2002 8:45 AM > To: CF-Talk > Subject: RE: Uploading zero-length files > > > Unless you go to a Java applet (or something similar), I don't > think there's > a way to get the file size info at the client end before uploading. The > FileUpload form field doesn't provide file size and JavaScript > can't get any > info about files on the client system. > > Chris Lofback > Sr. Web Developer > > TRX Integration > 28051 US 19 N., Ste. C > Clearwater, FL 33761 > www.trxi.com > > > > -Original Message- > > From: jgeorges [mailto:[EMAIL PROTECTED]] > > Sent: Thursday, September 26, 2002 10:21 AM > > To: CF-Talk > > Subject: Uploading zero-length files > > > > > > I am uploading a file (that the user has identified in an > > input type=file) using CFFILE. CFFILE does not allow zero > > length files. > > > > Is there a way I can get the filesize before attempting the upload? > > > > TIA, > > > > Sam > > > > > > > > > > > > Changed your e-mail? Keep your contacts! Use this free > > e-mail change of address service from Return Path. Register now! > > > __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
http://www.infomentum.com/appletfile/data.asp We are using the program and like it so far. > -Original Message- > From: Chris Lofback [mailto:[EMAIL PROTECTED]] > Sent: Thursday, September 26, 2002 10:45 AM > To: CF-Talk > Subject: RE: Uploading zero-length files > > Unless you go to a Java applet (or something similar), I don't think > there's > a way to get the file size info at the client end before uploading. The > FileUpload form field doesn't provide file size and JavaScript can't get > any > info about files on the client system. > > Chris Lofback > Sr. Web Developer > > TRX Integration > 28051 US 19 N., Ste. C > Clearwater, FL 33761 > www.trxi.com > > > > -Original Message- > > From: jgeorges [mailto:[EMAIL PROTECTED]] > > Sent: Thursday, September 26, 2002 10:21 AM > > To: CF-Talk > > Subject: Uploading zero-length files > > > > > > I am uploading a file (that the user has identified in an > > input type=file) using CFFILE. CFFILE does not allow zero > > length files. > > > > Is there a way I can get the filesize before attempting the upload? > > > > TIA, > > > > Sam > > > > > > > > > > > > Changed your e-mail? Keep your contacts! Use this free > > e-mail change of address service from Return Path. Register now! > > > __ Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Uploading zero-length files
Isaac, Thanks for the response. Both content_length and http_content_length returned a non-zero value. What I noticed is the filename does not get passed for zero length files. So testing for the existence of a filename solved my problem. Sam --- On Thu 09/26, S.Isaac Dealey wrote: From: S.Isaac Dealey [mailto: [EMAIL PROTECTED]] To: [EMAIL PROTECTED] Date: Thu, 26 Sep 2002 10:54:02 -0400 Subject: Re: Uploading zero-length files > I think there are a couple cgi variables you can use to estimate it... > cgi.content_length or maybe http_content_length ... not sure... If you > have > debugging turned on on the server, upload a file and then look at the > list > of cgi variables at the bottom of the page, the 1 or 2 you want should be > fairly easy to spot. > > > I am uploading a file (that the user has identified in an input > type=file) > > using CFFILE. CFFILE does not allow zero length files. > > > Is there a way I can get the filesize before attempting the upload? > > > S. Isaac Dealey > Certified Advanced ColdFusion 5 Developer > > www.turnkey.to > 954-776-0046 > __ Get the mailserver that powers this list at http://www.coolfusion.com FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
Thanks --- On Thu 09/26, Greg Luce wrote: From: Greg Luce [mailto: [EMAIL PROTECTED]] To: [EMAIL PROTECTED] Date: Thu, 26 Sep 2002 10:37:05 -0400 Subject: RE: Uploading zero-length files > I've done this: > > because someone told me about some 1 byte gif or something that causes > ddamage. Also to limit huge files. > > -Original Message- > From: jgeorges [mailto:[EMAIL PROTECTED]] > Sent: Thursday, September 26, 2002 10:21 AM > To: CF-Talk > Subject: Uploading zero-length files > > I am uploading a file (that the user has identified in an input > type=file) using CFFILE. CFFILE does not allow zero length files. > > Is there a way I can get the filesize before attempting the upload? > > TIA, > > Sam > > > > > > Changed your e-mail? Keep your contacts! Use this free e-mail change > of address service from Return Path. Register now! > > __ Signup for the Fusion Authority news alert and keep up with the latest news in ColdFusion and related topics. http://www.fusionauthority.com/signup.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
Unless you go to a Java applet (or something similar), I don't think there's a way to get the file size info at the client end before uploading. The FileUpload form field doesn't provide file size and JavaScript can't get any info about files on the client system. Chris Lofback Sr. Web Developer TRX Integration 28051 US 19 N., Ste. C Clearwater, FL 33761 www.trxi.com > -Original Message- > From: jgeorges [mailto:[EMAIL PROTECTED]] > Sent: Thursday, September 26, 2002 10:21 AM > To: CF-Talk > Subject: Uploading zero-length files > > > I am uploading a file (that the user has identified in an > input type=file) using CFFILE. CFFILE does not allow zero > length files. > > Is there a way I can get the filesize before attempting the upload? > > TIA, > > Sam > > > > > > Changed your e-mail? Keep your contacts! Use this free > e-mail change of address service from Return Path. Register now! > __ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
Re: Uploading zero-length files
I think there are a couple cgi variables you can use to estimate it... cgi.content_length or maybe http_content_length ... not sure... If you have debugging turned on on the server, upload a file and then look at the list of cgi variables at the bottom of the page, the 1 or 2 you want should be fairly easy to spot. > I am uploading a file (that the user has identified in an input type=file) > using CFFILE. CFFILE does not allow zero length files. > Is there a way I can get the filesize before attempting the upload? S. Isaac Dealey Certified Advanced ColdFusion 5 Developer www.turnkey.to 954-776-0046 __ This list and all House of Fusion resources hosted by CFHosting.com. The place for dependable ColdFusion Hosting. FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
RE: Uploading zero-length files
I've done this: because someone told me about some 1 byte gif or something that causes ddamage. Also to limit huge files. -Original Message- From: jgeorges [mailto:[EMAIL PROTECTED]] Sent: Thursday, September 26, 2002 10:21 AM To: CF-Talk Subject: Uploading zero-length files I am uploading a file (that the user has identified in an input type=file) using CFFILE. CFFILE does not allow zero length files. Is there a way I can get the filesize before attempting the upload? TIA, Sam Changed your e-mail? Keep your contacts! Use this free e-mail change of address service from Return Path. Register now! __ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/cf-talk@houseoffusion.com/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
