I'm using this technique to return a BLOB to a browser...

http://iprodeveloper.com/application-development/return-blob-browser

As I'm allowing any file type to be uploaded, when the user downloads, I'm specifying...

Content-Type: application/octet-stream

However, even if I specify the correct content type, I still seem to have an issue with PDF, DOC, XLS etc., the downloaded file is corrupt and will not open.


-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Bradley Stone
Sent: 30 November 2016 18:33
To: Web Enabling the IBM i (AS/400 and iSeries) <web400@xxxxxxxxxxxx>
Subject: Re: [WEB400] CGIDEV2 file upload data conversion

I believe you need to set the content type for each type of file that will be downloaded in your Apache Config.

The content-type you're getting now is a default Apache uses when it doesn't know the content type.

Here's a link:
https://developer.mozilla.org/en-US/docs/Web/Security/Securing_your_site/Configuring_server_MIME_types

This may help. I only did a quick scan. I'm not sure it has a list of extensions and their proper mime types, but you should be able to find that using Google.

Brad
www.bvstools.com

On Wed, Nov 30, 2016 at 9:41 AM, McGovern, Sean <sean.mcgovern@xxxxxxxxxxxxx
wrote:

Thanks.

I've now stopped the base64 encoding on the upload. The results look good.
I seem to be getting the correct hex values in the DB2 table.

I'm giving the users the ability to upload any type of file. When the
users wish to view the uploaded files, files are downloaded, specifying...

Content-Type: application/octet-stream
Content-Disposition: attachment; filename="xxx";

Working fine for XML, TXT, JPEG files etc., but have problems with
PDF, DOC, XLS.

When I use Notepad to compare the original uploaded file to the
downloaded file, no differences. Except, if I perform SaveAs in
Notepad, I see the original file has ANSI encoding specified, whereas
the uploaded/downloaded file has Unicode encoding specified.

Any ideas?




-----Original Message-----
From: WEB400 [mailto:web400-bounces@xxxxxxxxxxxx] On Behalf Of Bradley
Stone
Sent: 29 November 2016 18:13
To: Web Enabling the IBM i (AS/400 and iSeries) <web400@xxxxxxxxxxxx>
Subject: Re: [WEB400] CGIDEV2 file upload data conversion

Hi, Sean.

It looks like the data that "worked" was plain ascii and the other was
base
64 encoded (but still ASCII).

There should be no conversion of the data from ASCII to EBCDIC in your
case since the content type is application/[whatever].

I'd double check the headers on one that doesn't base64 encode the data.
And double check what you're using for the upload option to see if one
base64 encoded and one didn't.

Or, you may need to read the headers and if it is base64 encoded,
decode it before storing it in your IFS.

Brad
www.bvstools.com.

On Tue, Nov 29, 2016 at 9:55 AM, McGovern, Sean <
sean.mcgovern@xxxxxxxxxxxxx
wrote:

About a month ago, I installed the latest version of CGIDEV2, and
developed functionality that allows users to upload file attachments
to DB2 table via the web, with the ability to download from the DB2
table. In this way, files can be attached to 'orders' and users can
view these files when they wish. All was working well (even made a
video demonstrating the process to users).

Now paperwork has been approved for me to promote this development
to a QA environment. I tested the functionality again and hit an
issue that I've been unable to resolve. I'm unaware of any changes
that have been made in the past month.

Now, when the file attachment data reaches CGISRVPGM2, it appears to
have been converted and I don't know why.

I have specified...

CGIConvMode %%EBCDIC/EBCDIC%%
DefaultFsCCSID 937
DefaultNetCCSID 1208

If, for example, I attempt to upload a PDF document, I can see in
browser debug, that the post contains...

Content-Disposition: form-data; name="Filedata"; filename="Imp 4991.pdf"
Content-Type: application/pdf
Content-Transfer-Encoding: base64

JVBERi0xLjYN...

The above base64 data translates to "%PDF-1.6", which is what I see
when I open the PDF document in Notepad. I'm unsure whether it
should be base64 encoded, but I believe this was working this way previously.

When I did this a month ago, I got the correct hex values in the DB2
table...

255044462D312E31
%PDF-1.6
(CCSID 819)

Now, I get...

4A56424552693078

Debugging, I see this is the data (in hex) that is read and written
to the temporary filename in CGISRVPGM2. CGISRVPGM2 doesn't appear
to be converting this data.

I don't know why I'm now getting 4A564...whereas previously I got
2550444...??

Thanks for any help.




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